Dyfyniad APA

Rachels, J. (1999). The elements of moral philosophy (3rd ed.). McGraw-Hill College.

Dyfyniad Arddull Chicago

Rachels, James. The Elements of Moral Philosophy. 3rd ed. Boston: McGraw-Hill College, 1999.

Dyfyniad MLA

Rachels, James. The Elements of Moral Philosophy. 3rd ed. McGraw-Hill College, 1999.

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