Dees, N. (1965). Approach to adult teaching. Pergamon Press.
Dyfyniad Arddull ChicagoDees, Norman. Approach to Adult Teaching. Oxford: Pergamon Press, 1965.
Dyfyniad MLADees, Norman. Approach to Adult Teaching. Pergamon Press, 1965.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.