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.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.