Lancaster, O. E. (1974). Effective teaching and learning. Gordon and Breach.
Dyfyniad Arddull ChicagoLancaster, Otis Ewing. Effective Teaching and Learning. New York: Gordon and Breach, 1974.
Dyfyniad MLALancaster, Otis Ewing. Effective Teaching and Learning. Gordon and Breach, 1974.
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