Dyfyniad APA

Aiken, L. R. (1988). Psychological testing and assessment (6th ed.). Allyn.

Dyfyniad Arddull Chicago

Aiken, Lewis R. Psychological Testing and Assessment. 6th ed. Boston: Allyn, 1988.

Dyfyniad MLA

Aiken, Lewis R. Psychological Testing and Assessment. 6th ed. Allyn, 1988.

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