APA (7th ed.) Citation

Bidwell, S. (2012). Curiosities of Light and Sight. Project Gutenberg.

Chicago Style (17th ed.) Citation

Bidwell, Shelford. Curiosities of Light and Sight. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Bidwell, Shelford. Curiosities of Light and Sight. Project Gutenberg, 2012.

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