APA (7th ed.) Citation

Burton, R., & Beecham, T. (2009). Weak on Square Roots. Project Gutenberg.

Chicago Style (17th ed.) Citation

Burton, Russell, and Tom Beecham. Weak on Square Roots. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Burton, Russell, and Tom Beecham. Weak on Square Roots. Project Gutenberg, 2009.

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