Citazione Stile APA (7a Edizione)

Rachels, S., & Rachels, J. (2019). The elements of moral philosophy (Ninth edition.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Rachels, Stuart, e James Rachels. The Elements of Moral Philosophy. Ninth edition. New York: McGraw-Hill, 2019.

Citatione MLA (9a ed.)

Rachels, Stuart, e James Rachels. The Elements of Moral Philosophy. Ninth edition. McGraw-Hill, 2019.