APA (7th ed.) Citation

Hume, D., & Hume, D. (2004). An enquiry concerning the principles of morals (repr.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Hume, David, and David Hume. An Enquiry Concerning the Principles of Morals. repr. Oxford [u.a.]: Oxford Univ. Press, 2004.

MLA (9th ed.) Citation

Hume, David, and David Hume. An Enquiry Concerning the Principles of Morals. repr. Oxford Univ. Press, 2004.