APA (7th ed.) Citation

Evans, R. F., & Pelagius Haereticus ca. 360-422. (1968). Four letters of Pelagius (1. publ.). Black.

Chicago Style (17th ed.) Citation

Evans, Robert F., and Pelagius Haereticus ca. 360-422. Four Letters of Pelagius. 1. publ. London: Black, 1968.

MLA (9th ed.) Citation

Evans, Robert F., and Pelagius Haereticus ca. 360-422. Four Letters of Pelagius. 1. publ. Black, 1968.

Warning: These citations may not always be 100% accurate.