APA (7th ed.) Citation

Defoe, D., & Aikin, L. (2007). Robinson Crusoe in Words of One Syllable. Project Gutenberg.

Chicago Style (17th ed.) Citation

Defoe, Daniel, and Lucy Aikin. Robinson Crusoe in Words of One Syllable. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Defoe, Daniel, and Lucy Aikin. Robinson Crusoe in Words of One Syllable. Project Gutenberg, 2007.

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