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