ATLA historical monograph collection, Harmer, J. R. 1., & Lightfoot, J. B. (1891). The Apostolic fathers: Comprising the epistles (genuine and spurious) of Clement of Rome, the epistles of S. Ignatius, the epistle of S. Polycarp, The martyrdom of S. Polycarp, The teaching of the Apostles, The epistle of Barnabas, The shepherd of Hermas, The epistle to Diognetus, The fragments of Papias, The reliques of the elders preserved in Irenaeus : revised texts with short introductions and English translations. London: Macmillan.MLA Citation
ATLA historical monograph collection, J. R. 1857-1944 Harmer, and Joseph Barber Lightfoot. The Apostolic Fathers: Comprising the Epistles (genuine and Spurious) of Clement of Rome, the Epistles of S. Ignatius, the Epistle of S. Polycarp, The Martyrdom of S. Polycarp, The Teaching of the Apostles, The Epistle of Barnabas, The Shepherd of Hermas, The Epistle to Diognetus, The Fragments of Papias, The Reliques of the Elders Preserved in Irenaeus : Revised Texts With Short Introductions and English Translations. London: Macmillan, 1891.