APA (7th ed.) Citation

Chambers, R. W., & Stevens, W. D. (2009). The Dark Star. Project Gutenberg.

Chicago Style (17th ed.) Citation

Chambers, Robert W., and William Dodge Stevens. The Dark Star. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Chambers, Robert W., and William Dodge Stevens. The Dark Star. Project Gutenberg, 2009.

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