Cita APA (7a ed.)

Skinner, B. F. (1969). Contingencies of reinforcement: A theoretical analysis. Appleton-Century-Crofts.

Cita Chicago Style (17a ed.)

Skinner, Burrhus Frederic. Contingencies of Reinforcement: A Theoretical Analysis. New York: Appleton-Century-Crofts, 1969.

Cita MLA (9a ed.)

Skinner, Burrhus Frederic. Contingencies of Reinforcement: A Theoretical Analysis. Appleton-Century-Crofts, 1969.