APA (7th ed.) Citation

Roosevelt, T. (2004). The Rough Riders. Project Gutenberg.

Chicago Style (17th ed.) Citation

Roosevelt, Theodore. The Rough Riders. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Roosevelt, Theodore. The Rough Riders. Project Gutenberg, 2004.

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