Travers, R. M. W. (1955). Educational measurement. Macmillan.
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Dyfyniad Arddull Chicago
Travers, Robert M. W. Educational Measurement. New York: Macmillan, 1955.
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Dyfyniad MLA
Travers, Robert M. W. Educational Measurement. Macmillan, 1955.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.