APA (7th ed.) Citation

Dougall, L. (2005). What Necessity Knows. Project Gutenberg.

Chicago Style (17th ed.) Citation

Dougall, L. What Necessity Knows. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Dougall, L. What Necessity Knows. Project Gutenberg, 2005.

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