Dyfyniad APA

Sax, G., & Newton, J. W. (1997). Principles of educational and psychological measurement and evaluation (4th ed.). Belmont, CA: Wadsworth.

Dyfyniad Arddull Chicago

Sax, Gilbert., và James W. Newton. Principles of Educational and Psychological Measurement and Evaluation. 4th ed. Belmont, CA: Wadsworth, 1997.

Dyfyniad MLA

Sax, Gilbert., và James W. Newton. Principles of Educational and Psychological Measurement and Evaluation. 4th ed. Belmont, CA: Wadsworth, 1997.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.