Ornstein, A. C. (2003). Pushing the envelope: Critical issues in education. Pearson Education.
Citace podle Chicago (17th ed.)Ornstein, Allan C. Pushing the Envelope: Critical Issues in Education. Upper Saddle River: Pearson Education, 2003.
Citace podle MLA (9th ed.)Ornstein, Allan C. Pushing the Envelope: Critical Issues in Education. Pearson Education, 2003.
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