APA (7th ed.) Citation

Bixby, J. (2010). The Holes Around Mars. Project Gutenberg.

Chicago Style (17th ed.) Citation

Bixby, Jerome. The Holes Around Mars. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Bixby, Jerome. The Holes Around Mars. Project Gutenberg, 2010.

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