Παραπομπή APA
Gredler, M. E. (2001). Learning and instruction: Theory into practice (4th ed.). Upper Saddle River: Merrill.
Παραπομπή Chicago StyleGredler, Margaret E. Learning and Instruction: Theory Into Practice. 4th ed. Upper Saddle River: Merrill, 2001.
Παραπομπή MLAGredler, Margaret E. Learning and Instruction: Theory Into Practice. 4th ed. Upper Saddle River: Merrill, 2001.
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