APA (7th ed.) Citation

Koepgen, G. (1978). Die Gnosis des Christentums Occidens.

Chicago Style (17th ed.) Citation

Koepgen, Georg. "Die Gnosis Des Christentums." Occidens 1978.

MLA (9th ed.) Citation

Koepgen, Georg. "Die Gnosis Des Christentums." Occidens, 1978.

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