APA (7th ed.) Citation

Griffith, G. C. (2006). A Honeymoon in Space. Project Gutenberg.

Chicago Style (17th ed.) Citation

Griffith, George Chetwynd. A Honeymoon in Space. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Griffith, George Chetwynd. A Honeymoon in Space. Project Gutenberg, 2006.

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