APA (7th ed.) Citation

Gallun, R. Z. (2011). Comet's Burial. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gallun, Raymond Z. Comet's Burial. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Gallun, Raymond Z. Comet's Burial. Project Gutenberg, 2011.

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