APA (7th ed.) Citation

Leiber, F. (2009). What's He Doing in There? Project Gutenberg.

Chicago Style (17th ed.) Citation

Leiber, Fritz. What's He Doing in There? Project Gutenberg, 2009.

MLA (9th ed.) Citation

Leiber, Fritz. What's He Doing in There? Project Gutenberg, 2009.

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