APA (7th ed.) Citation

Thorne, G. (2012). The Secret Service Submarine: A Story of the Present War. Project Gutenberg.

Chicago Style (17th ed.) Citation

Thorne, Guy. The Secret Service Submarine: A Story of the Present War. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Thorne, Guy. The Secret Service Submarine: A Story of the Present War. Project Gutenberg, 2012.

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