 | A confession of my faith and a reason of my practice, or, With who, and who not, I can hold church-fellowship, or the communion of saints | John Bunyan | Text Creation Partnership | | 1672 |
 | A defence of revealed religion in six sermons upon Rom. I, 16 | Henry Hallywell | Text Creation Partnership | | 1694 |
 | A demonstration of the divine authority of the law of nature and of the Christian religion in two parts | Samuel Parker | Text Creation Partnership | | 1681 |
 | A discourse for the vindicating of Christianity from the charge of imposture Offer’d, by way of letter, to the consideration of the deists of the present | Humphrey Prideaux | Text Creation Partnership | | 1697 |
 | A discourse of the excellency of Christianity | Henry Hallywell | Text Creation Partnership | | 1671 |
 | A seasonable apology for religion being the subject of two sermons lately delivered in an auditory in London | Matthew Poole | Text Creation Partnership | | 1673 |
 | A second defence of the learned Hugo Grotius, or, A vindication of the digression concerning him from some fresh exceptions | Henry Hammond | Text Creation Partnership | | 1655 |
 | A second vindication of The reasonableness of Christianity, &c, by the author of The reasonableness of Christinaity, &c | John Locke | Text Creation Partnership | | 1697 |
 | A sermon of the credibility of the mysteries of the Christian religion preached before a learned audience | Thomas Smith | Text Creation Partnership | | 1675 |
 | A short discourse upon the reasonableness of men’s having a religion, or worship of God by His Grace, George, Duke of Buckingham | George Villiers | Text Creation Partnership | | 1685 |
 | A true copy of Mr. Roger Altham’s recantation, for licensing Mr. Hill’s book against the Bishop of Salisbury | Roger Altham | Text Creation Partnership | | 1695 |
 | A vindication of the truth of Christian religion against the objections of all modern opposers written in French by James Abbadie | Jacques Abbadie | Text Creation Partnership | | 1694 |
 | A vvoorke concerning the trewnesse of the Christian religion, written in French | Philippe de Mornay | Text Creation Partnership | | 1587 |
 | Arnobius of Sicca: The Case against the Pagans, Volumes 1 & 2 | Arnobius George E. McCracken | Newman Press | Ancient Christian Writers | 1949 |
 | Against Marcellus and On Ecclesiastical Theology | Eusebius of Caesarea | Catholic University of America | The Fathers of the Church | 2017 |
 | An apology for the true Christian divinity, as the same is held forth, and preached by the people, called, in scorn, Quakers being a full explanation | Robert Barclay | Text Creation Partnership | | 1678 |
 | Ancoratus | Epiphanius of Cyprus | Catholic University of America | The Fathers of the Church | 2014 |
 | Apologetical Works and Octavius | Tertullian Minucius Felix | Catholic University of America | The Fathers of the Church | 1950 |
 | Apologia pro doctrina sua adversus calumniatores authore Thoma Albio | Thomas White | Text Creation Partnership | | 1661 |
 | Apologist | John Chrysostom | Catholic University of America | The Fathers of the Church | 1985 |
 | Athenagoras: Embassy for the Christians, The Resurrection of the Dead | Athenagoras Joseph Hugh Crehan | Newman Press | Ancient Christian Writers | 1956 |
 | Atheomastix clearing foure truthes, against atheists and infidels | Martin Fotherby | Text Creation Partnership | | 1622 |
 | Believers evidences for eternall life collected out of the first epistle of John which is catholique | Francis Roberts | Text Creation Partnership | | 1655 |
 | Christian Apologetics of the Second Century: In Their Relation to Modern Thought | Philip Carrington | Macmillan Co. SPCK | | 1921 |
 | Clement of Alexandria | Clement of Alexandria G. W. Butterworth | Harvard University Press William Heinemann | The Loeb Classical Library: English | 1960 |
 | Clement of Alexandria: Greek Text | Clement of Alexandria G. W. Butterworth | Harvard University Press William Heinemann | The Loeb Classical Library: Greek | 1960 |
 | Dialogue against the Jews | Petrus Alfonsi | Catholic University of America | The Fathers of the Church | 2006 |
 | Firmicus Maternus: The Error of the Pagan Religions | Firmicus Maternus Clarence A. Forbes | Newman Press | Ancient Christian Writers | 1970 |
 | Four discourses delivered to the clergy of the Diocess of Sarum … by the Right Reverend Father in God, Gilbert, Lord Bishop of Sarum | Gilbert Burnet | Text Creation Partnership | | 1694 |
 | Grotius, his arguments for the truth of Christian religion rendred into plain English verse | Hugo Grotius | Text Creation Partnership | | 1686 |
 | Iberian Fathers | Pacian of Barcelona Orosius of Braga | Catholic University of America | The Fathers of the Church | 1999 |
 | Irenaeus of Lugdunum: A Study of His Teaching | F. R. Montgomery Hitchcock | Cambridge University Press | | 1914 |
 | Lactantius: The Divine Institutes, Books I–VII | Lactantius | Catholic University of America | The Fathers of the Church | 1964 |
 | Lo mejor de Tertuliano | Tertuliano | Editorial CLIE | Patrística | 2001 |
 | More reasons for the Christian religion and no reason against it, or, A second appendix to the Reasons of the Christian religion being I. an answer to | Richard Baxter | Text Creation Partnership | | 1672 |
 | Of the reasonableness of Christian religion by H.H. D.D | Henry Hammond | Text Creation Partnership | | 1650 |
 | On the Apostolic Preaching | Irenaeus of Lyons | St Vladimir’s Seminary Press | Popular Patristics Series | 1997 |
 | Origines sacræ, or, A rational account of the grounds of Christian faith, as to the truth and divine authority of the Scriptures and the matters therein | Edward Stillingfleet | Text Creation Partnership | | 1662 |
 | Rationes decem quibus fretus, certamen aduersarijs obtulit in causa fidei | Edmund Campion | Text Creation Partnership | | 1581 |
 | Saint Augustine: Against Julian | Augustine of Hippo | Catholic University of America | The Fathers of the Church | 1957 |
 | Saint Augustine: The City of God, Books I–VII | Augustine of Hippo | Catholic University of America | The Fathers of the Church | 1950 |
 | Saint Augustine: The City of God, Books VIII–XVI | Augustine of Hippo | Catholic University of America | The Fathers of the Church | 1952 |
 | Saint Augustine: The City of God, Books XVII–XXII | Augustine of Hippo | Catholic University of America | The Fathers of the Church | 1954 |
 | Saint Peters rocke vnder which title is deciphered the faith of Peter, the foundation of the church, Christs sacrificehood, and the comfort of the holy | Alexander Top | Text Creation Partnership | | 1597 |
 | Scripture vindicated from the mis-apprehensions, mis-interpretations, and mis-applications of Mr Stephen Marshall, [in] his sermon preached before the | Edward Symmons | Text Creation Partnership | | 1645 |
 | Some gospel-truths opened according to the Scriptures, or, The divine and humane nature of Christ Jesus, his coming into the world, his righteousness | John Bunyan | Text Creation Partnership | | 1656 |
 | Some thoughts concerning the several causes and occasions of atheism, especially in the present age with some brief reflections on Socinianism, and on | John Edwards | Text Creation Partnership | | 1695 |
 | St. Justin Martyr: The First and Second Apologies | Justin Martyr Leslie William Barnard | Paulist Press | Ancient Christian Writers | 1997 |
 | St. Paul’s catechism, or, A brief and plain explication of the six principles of the Christian religion, as recorded Heb. 6., 1,2 with some considerations | Thomas Grantham | Text Creation Partnership | | 1687 |
 | Tertullian’s Apology and de Spectaculis | Tertullian Minucius Felix | Harvard University Press William Heinemann | The Loeb Classical Library: English | 1931 |
 | Tertullian’s Apology and de Spectaculis: Latin Text | Tertullian Minucius Felix | Harvard University Press William Heinemann | The Loeb Classical Library: Latin | 1931 |
 | The Apocriticus of Macarius Magnes | T. W. Crafer Macarius Magnes | Macmillan Co. SPCK | Translations of Christian Literature: Series I: Greek Texts | 1919 |
 | The Apology of Aristides on Behalf of the Christians: Greek Text | J. Armitage Robinson | Cambridge University Press | Texts and Studies: Contributions to Biblical and Patristic Literature | 1891 |
 | The Apology of Aristides on Behalf of the Christians: Introduction and Notes | J. Rendel Harris | Cambridge University Press | Texts and Studies: Contributions to Biblical and Patristic Literature | 1891 |
 | The Apology of Aristides on Behalf of the Christians: Syriac | J. Rendel Harris | Cambridge University Press | Texts and Studies: Contributions to Biblical and Patristic Literature | 1891 |
 | The apology of the Church of England, and an epistle to one Seignior Scipio a Venetian gentleman, concerning the Council of Trent written both in Latin | John Jewel | Text Creation Partnership | | 1685 |
 | The Defenders of the Faith; or, The Christian Apologists of the Second and Third Centuries | Frederick Watson | E. & J. B. Young & Co. SPCK | The Fathers for English Readers | |
 | The Demonstration of the Apostolic Preaching | Irenaeus of Lyons | Macmillan Co. SPCK | Translations of Christian Literature: Series IV: Oriental Texts | 1920 |
 | The divinity of the Christian religion, proved by the evidence of reason and divine revelation by William Bates | William Bates | Text Creation Partnership | | 1677 |
 | The Messiah already come | John Harrison | Text Creation Partnership | | 1619 |
 | The Octavius of Marcus Minucius Felix | Minucius Felix G. W. Clarke | Newman Press | Ancient Christian Writers | 1974 |
 | The Proof of the Gospel: Being the Demonstratio Evangelica of Eusebius of Cæsarea | Eusebius of Caesarea | Macmillan Co. SPCK | Translations of Christian Literature: Series I: Greek Texts | 1920 |
 | The Provincial Letters; Pensées; Scientific Treatises | Blaise Pascal | Encyclopædia Britannica | Great Books of the Western World | 1990 |
 | The reasonableness of Christianity as delivered in the Scriptures | John Locke | Text Creation Partnership | | 1695 |
 | The reasons of the Christian religion the first part, of godliness, proving by natural evidence the being of God | Richard Baxter | Text Creation Partnership | | 1667 |
 | The Seven Books of History against the Pagans | Orosius of Braga | Catholic University of America | The Fathers of the Church | 1964 |
 | The soules own evidence, for its own immortality | Philippe de Mornay | Text Creation Partnership | | 1646 |
 | The spirit of prophecy a treatise to prove, by the wayes formerly in use among the Jews, in the tryal of pretenders to a prophetic spirit, that Christ | William Hughes | Text Creation Partnership | | 1679 |
 | The Truth of the Christian Religion: In Six Books | Hugo Grotius | Richard Baynes | | 1818 |
 | Theodoret of Cyrus: A Cure for Pagan Maladies | Theodoret of Cyrus Thomas Halton | Newman Press | Ancient Christian Writers | 2013 |
 | True religion explained and defended against ye archenemies thereof in these times In six bookes. Published by authority for the co[m]mon good | Hugo Grotius | Text Creation Partnership | | 1632 |