APA (7th ed.) Citation

Verne, J., King, E. E., & Mercier, L. P. (2009). From the Earth to the Moon. Project Gutenberg.

Chicago Style (17th ed.) Citation

Verne, Jules, Eleanor E. King, and Lewis Page Mercier. From the Earth to the Moon. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Verne, Jules, et al. From the Earth to the Moon. Project Gutenberg, 2009.

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