APA (7th ed.) Citation

Lockhart, C., & Summers, D. G. (2007). The Dude Wrangler. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lockhart, Caroline, and Dudley Gloyne Summers. The Dude Wrangler. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Lockhart, Caroline, and Dudley Gloyne Summers. The Dude Wrangler. Project Gutenberg, 2007.

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