Cita APA (7th ed.)

Hume, D. (1998). An enquiry concerning the principles of morals. Univ. Pr.

Cita Chicago (17th ed.)

Hume, David. An Enquiry Concerning the Principles of Morals. Oxford: Univ. Pr, 1998.

Cita MLA (9th ed.)

Hume, David. An Enquiry Concerning the Principles of Morals. Univ. Pr, 1998.