Williams, G. (1951). Humanistic ethics. New York: Philosophical Library.
Dyfyniad Arddull ChicagoWilliams, Gardner. Humanistic Ethics. New York: Philosophical Library, 1951.
Dyfyniad MLAWilliams, Gardner. Humanistic Ethics. New York: Philosophical Library, 1951.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.