Dyfyniad APA

Cronbach, L. J. (1990). Essentials of psychological testing (5th.ed.). Harper Collins.

Dyfyniad Arddull Chicago

Cronbach, Lee J. Essentials of Psychological Testing. 5th.ed. New York: Harper Collins, 1990.

Dyfyniad MLA

Cronbach, Lee J. Essentials of Psychological Testing. 5th.ed. Harper Collins, 1990.

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