APA (7th ed.) Citation

Wirt, M. A. (2010). Behind the Green Door. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wirt, Mildred A. Behind the Green Door. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Wirt, Mildred A. Behind the Green Door. Project Gutenberg, 2010.

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