APA (7th ed.) Citation

Saphro, C. (2009). Zero Data. Project Gutenberg.

Chicago Style (17th ed.) Citation

Saphro, Charles. Zero Data. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Saphro, Charles. Zero Data. Project Gutenberg, 2009.

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