APA (7th ed.) Citation

Defoe, D., & Allison, S. B. (2005). An American Robinson Crusoe. Project Gutenberg.

Chicago Style (17th ed.) Citation

Defoe, Daniel, and Samuel B. Allison. An American Robinson Crusoe. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Defoe, Daniel, and Samuel B. Allison. An American Robinson Crusoe. Project Gutenberg, 2005.

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