Citazione Stile APA (7a Edizione)

Klausmeier, H. J., & Ripple, R. E. (1971). Learning and human abilities: Educational psychology (3d ed.). Harper & Row.

Citazione stile Chigago Style (17a edizione)

Klausmeier, Herbert John, e Richard E. Ripple. Learning and Human Abilities: Educational Psychology. 3d ed. New York: Harper & Row, 1971.

Citatione MLA (9a ed.)

Klausmeier, Herbert John, e Richard E. Ripple. Learning and Human Abilities: Educational Psychology. 3d ed. Harper & Row, 1971.