Butler, J. D. (1951). Four philosophies and their practice in education and religion. Harper.
Dyfyniad Arddull ChicagoButler, James Donald. Four Philosophies and Their Practice in Education and Religion. New York: Harper, 1951.
Dyfyniad MLAButler, James Donald. Four Philosophies and Their Practice in Education and Religion. Harper, 1951.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.