Dyfyniad APA

Rachels, J. (1993). The elements of moral philosophy (2nd ed.). McGraw-hill.

Dyfyniad Arddull Chicago

Rachels, James. The Elements of Moral Philosophy. 2nd ed. New York: McGraw-hill, 1993.

Dyfyniad MLA

Rachels, James. The Elements of Moral Philosophy. 2nd ed. McGraw-hill, 1993.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.