APA (7th ed.) Citation

Gregorius, N. 3., & Callahan, V. W. (1967). Ascetical works. The fathers of the church.

Chicago Style (17th ed.) Citation

Gregorius, Nyssenus 335-394, and Virginia Woods Callahan. "Ascetical Works." The Fathers of the Church 1967.

MLA (9th ed.) Citation

Gregorius, Nyssenus 335-394, and Virginia Woods Callahan. "Ascetical Works." The Fathers of the Church, 1967.

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