APA (7th ed.) Citation

Chambers, R. W., & Keller, A. I. (2012). Who Goes There! Project Gutenberg.

Chicago Style (17th ed.) Citation

Chambers, Robert W., and Arthur Ignatius Keller. Who Goes There! Project Gutenberg, 2012.

MLA (9th ed.) Citation

Chambers, Robert W., and Arthur Ignatius Keller. Who Goes There! Project Gutenberg, 2012.

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