APA (7th ed.) Citation

Mead, G. R. S. (2011). The Gnostic Crucifixion. Project Gutenberg.

Chicago Style (17th ed.) Citation

Mead, G. R. S. The Gnostic Crucifixion. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Mead, G. R. S. The Gnostic Crucifixion. Project Gutenberg, 2011.

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