APA (7th ed.) Citation

Wirt, M. A. (2011). Swamp Island. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wirt, Mildred A. Swamp Island. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Wirt, Mildred A. Swamp Island. Project Gutenberg, 2011.

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