APA (7th ed.) Citation

Sheldon, C. M. (2006). The Crucifixion of Philip Strong. Project Gutenberg.

Chicago Style (17th ed.) Citation

Sheldon, Charles M. The Crucifixion of Philip Strong. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Sheldon, Charles M. The Crucifixion of Philip Strong. Project Gutenberg, 2006.

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