Sax, G. (1974). Principles of educational measurement and evaluation. Wadsworth Pub. Co.
Chicago-viite (17. p.)Sax, Gilbert. Principles of Educational Measurement and Evaluation. Belmont, Calif.: Wadsworth Pub. Co, 1974.
MLA-viite (8. p.)Sax, Gilbert. Principles of Educational Measurement and Evaluation. Wadsworth Pub. Co, 1974.
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