APA (7th ed.) Citation

Pearson, B. A., & Köster, H. (1991). Pre-Valentinian gnosticism in Alexandria. The future of early Christianity, 455-466.

Chicago Style (17th ed.) Citation

Pearson, Birger A., and Helmut Köster. "Pre-Valentinian Gnosticism in Alexandria." The Future of Early Christianity 1991: 455-466.

MLA (8th ed.) Citation

Pearson, Birger A., and Helmut Köster. "Pre-Valentinian Gnosticism in Alexandria." The Future of Early Christianity, 1991, pp. 455-466.

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