APA (7th ed.) Citation

Hume, D. (1907). An enquiry concerning the principles of morals (Repr. from the ed. of 1777.). The Open Court Publ. Co. [u.a.].

Chicago Style (17th ed.) Citation

Hume, David. An Enquiry Concerning the Principles of Morals. Repr. from the ed. of 1777. Chicago [u.a.]: The Open Court Publ. Co. [u.a.], 1907.

MLA (9th ed.) Citation

Hume, David. An Enquiry Concerning the Principles of Morals. Repr. from the ed. of 1777. The Open Court Publ. Co. [u.a.], 1907.