APA (7th ed.) Citation

Bishop, G., & Humphreys, D. S. (2012). The Marines Have Landed. Project Gutenberg.

Chicago Style (17th ed.) Citation

Bishop, Giles, and Donald S. Humphreys. The Marines Have Landed. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Bishop, Giles, and Donald S. Humphreys. The Marines Have Landed. Project Gutenberg, 2012.

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