Gage, N. L. (1972). Teacher effectiveness and teacher education: The search for a scientific basis. Pacific Books.
Citace podle Chicago (17th ed.)Gage, N. L. Teacher Effectiveness and Teacher Education: The Search for a Scientific Basis. Palo Alto, Calif: Pacific Books, 1972.
Citace podle MLA (9th ed.)Gage, N. L. Teacher Effectiveness and Teacher Education: The Search for a Scientific Basis. Pacific Books, 1972.
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