Sax, G. (1980). Principles of educational and psychological measurement and evaluation (Second edition.). Wadsworth Pub. Co..
Citace podle Chicago (17th ed.)Sax, Gilbert. Principles of Educational and Psychological Measurement and Evaluation. Second edition. Belmont, Calif.: Wadsworth Pub. Co., 1980.
Citace podle MLA (8th ed.)Sax, Gilbert. Principles of Educational and Psychological Measurement and Evaluation. Second edition. Wadsworth Pub. Co., 1980.
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