Cita APA (7a ed.)

Skinner, B. F. (1969). Contingencies of reinforcement: A theoretical analysis. Prentice-Hall.

Cita Chicago Style (17a ed.)

Skinner, B. F. Contingencies of Reinforcement: A Theoretical Analysis. Englewood Cliffs, New Jersey: Prentice-Hall, 1969.

Cita MLA (9a ed.)

Skinner, B. F. Contingencies of Reinforcement: A Theoretical Analysis. Prentice-Hall, 1969.