APA (7th ed.) Citation

Rockwell, C., Glanzman, L., & Ley, W. (2006). Stand by for Mars! Project Gutenberg.

Chicago Style (17th ed.) Citation

Rockwell, Carey, Louis Glanzman, and Willy Ley. Stand by for Mars! Project Gutenberg, 2006.

MLA (9th ed.) Citation

Rockwell, Carey, et al. Stand by for Mars! Project Gutenberg, 2006.

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