APA (7th ed.) Citation

Machen, A. (2011). The Great Return. Project Gutenberg.

Chicago Style (17th ed.) Citation

Machen, Arthur. The Great Return. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Machen, Arthur. The Great Return. Project Gutenberg, 2011.

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