Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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