APA (7th ed.) Citation

Hume, D. (2003). A Treatise of Human Nature. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hume, David. A Treatise of Human Nature. Project Gutenberg, 2003.

MLA (9th ed.) Citation

Hume, David. A Treatise of Human Nature. Project Gutenberg, 2003.

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