APA (7th ed.) Citation

Butz, C. A. (2010). Swamp Demons. Project Gutenberg.

Chicago Style (17th ed.) Citation

Butz, C. A. Swamp Demons. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Butz, C. A. Swamp Demons. Project Gutenberg, 2010.

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