Mehrens, W. A., & Lehmann, I. J. (1984). Measurement and evaluation in education and psychology (3rd ed.). New York: Holt, Rinehart, and Winston.

Mehrens, William A., و Irvin J. Lehmann. Measurement and Evaluation in Education and Psychology. 3rd ed. New York: Holt, Rinehart, and Winston, 1984.

Mehrens, William A., و Irvin J. Lehmann. Measurement and Evaluation in Education and Psychology. 3rd ed. New York: Holt, Rinehart, and Winston, 1984.