APA (7th ed.) Citation

Quispel, G., & Layton, B. (1980). Gnosis and Psychology. The rediscovery of gnosticism ; 1: The school of Valentinus, 1, 17-31.

Chicago Style (17th ed.) Citation

Quispel, Gilles, and Bentley Layton. "Gnosis and Psychology." The Rediscovery of Gnosticism ; 1: The School of Valentinus 1 (1980): 17-31.

MLA (8th ed.) Citation

Quispel, Gilles, and Bentley Layton. "Gnosis and Psychology." The Rediscovery of Gnosticism ; 1: The School of Valentinus, vol. 1, 1980, pp. 17-31.