Cita APA (7a ed.)

Whaley, D. L., & Malott, R. W. (1971). Elementary principles of behavior. Appleton-Century-Crofts.

Cita Chicago Style (17a ed.)

Whaley, Donald L., y Richard W. Malott. Elementary Principles of Behavior. New York: Appleton-Century-Crofts, 1971.

Cita MLA (9a ed.)

Whaley, Donald L., y Richard W. Malott. Elementary Principles of Behavior. Appleton-Century-Crofts, 1971.