Olthuis, J. H. (1969). Facts, values and ethics: A confrontation with twentieth century British moral philosophy in particular G.E. Moore (2nd ed.). Van Gorcum.
Dyfyniad Arddull ChicagoOlthuis, James H. Facts, Values and Ethics: A Confrontation with Twentieth Century British Moral Philosophy in Particular G.E. Moore. 2nd ed. Assen [Netherlands]: Van Gorcum, 1969.
Dyfyniad MLAOlthuis, James H. Facts, Values and Ethics: A Confrontation with Twentieth Century British Moral Philosophy in Particular G.E. Moore. 2nd ed. Van Gorcum, 1969.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.