APA (7th ed.) Citation

Locke, J. (2004). An Essay Concerning Humane Understanding, Volume 1 MDCXC, Based on the 2nd Edition, Books 1 and 2. Project Gutenberg.

Chicago Style (17th ed.) Citation

Locke, John. An Essay Concerning Humane Understanding, Volume 1 MDCXC, Based on the 2nd Edition, Books 1 and 2. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Locke, John. An Essay Concerning Humane Understanding, Volume 1 MDCXC, Based on the 2nd Edition, Books 1 and 2. Project Gutenberg, 2004.

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