APA (7th ed.) Citation

Leiber, F., & Stone, D. (2009). The Moon is Green. Project Gutenberg.

Chicago Style (17th ed.) Citation

Leiber, Fritz, and David Stone. The Moon Is Green. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Leiber, Fritz, and David Stone. The Moon Is Green. Project Gutenberg, 2009.

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