Cole, P. G. 1. (1994). Teaching principles and practice (2nd ed.). New York ; Sydney: Prentice Hall.
Dyfyniad Arddull ChicagoCole, P. G. 1937-. Teaching Principles and Practice. 2nd ed. New York ; Sydney: Prentice Hall, 1994.
Dyfyniad MLACole, P. G. 1937-. Teaching Principles and Practice. 2nd ed. New York ; Sydney: Prentice Hall, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.