APA (7th ed.) Citation

Archibald, J. (2009). Operation Earthworm. Project Gutenberg.

Chicago Style (17th ed.) Citation

Archibald, Joe. Operation Earthworm. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Archibald, Joe. Operation Earthworm. Project Gutenberg, 2009.

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