APA (7th ed.) Citation

Dryfoos, D. (2009). Tree, Spare that Woodman. Project Gutenberg.

Chicago Style (17th ed.) Citation

Dryfoos, Dave. Tree, Spare That Woodman. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Dryfoos, Dave. Tree, Spare That Woodman. Project Gutenberg, 2009.

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