APA (7th ed.) Citation

Samachson, J., & Emshwiller, E. (2009). Dead Man's Planet. Project Gutenberg.

Chicago Style (17th ed.) Citation

Samachson, Joseph, and Ed Emshwiller. Dead Man's Planet. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Samachson, Joseph, and Ed Emshwiller. Dead Man's Planet. Project Gutenberg, 2009.

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