APA (7th ed.) Citation

Locke, J. (1838). An essay concerning human understanding (28th ed.).

Chicago Style (17th ed.) Citation

Locke, John. An Essay Concerning Human Understanding. 28th ed. London, 1838.

MLA (8th ed.) Citation

Locke, John. An Essay Concerning Human Understanding. 28th ed. 1838.

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