APA (7th ed.) Citation

Leighton, R. (2011). Sergeant Silk the Prairie Scout. Project Gutenberg.

Chicago Style (17th ed.) Citation

Leighton, Robert. Sergeant Silk the Prairie Scout. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Leighton, Robert. Sergeant Silk the Prairie Scout. Project Gutenberg, 2011.

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