APA (7th ed.) Citation

Wicks, M. (2008). To Mars via The Moon An Astronomical Story. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wicks, Mark. To Mars via The Moon An Astronomical Story. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Wicks, Mark. To Mars via The Moon An Astronomical Story. Project Gutenberg, 2008.

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