Greek and English:
Butterworth, G. W., trans. Clement of Alexandria: The Exhortation to the Greeks, The Rich Man’s Salvation, and the Fragment of an Address Entitled, To the Newly Baptized. LCL. London: Heinemann, 1919.
Glover, T. R., and Gerald H. Rendall, trans. Tertullian: Apology, and De Spectaculis; Minucius Felix. LCL. London: Heinemann, 1931.
Lake, Kirsopp, trans. The Apostolic Fathers. 2 vols. LCL. Cambridge, MA: Harvard University Press, 1912–1913.
McCracken, George E. et al., trans. Saint Augustine: The City of God. 7 vols. LCL.London: Heinemann, 1957–1972.
Watts, William, trans. Augustine: Confessions. 2 vols. LCL. London: Heinemann, 1912.
Note: As always, see the Digital Loeb Classical Library for up-to-date texts and indexing. Regarding the above, see particularly the new LCL editions of the Apostolic Fathers (Ehrman 2003) and Augustine’s Confessions (Hammond 2014–2016).
Roberts, Alexander, and James Donaldson, eds. The Ante-Nicene Fathers. 10 vols. New York: Scribner’s Sons, 1885–1887.
Schaff, Philip, ed. Nicene and Post-Nicene Fathers, Series 1. 14 vols. New York: Scribner’s Sons, 1898–1909.
Schaff, Philip, and Henry Wace, eds. Nicene and Post-Nicene Fathers, Series 2. 14 vols. New York: The Christian Literature Company, 1890–1900.