Cita APA (7a ed.)
Skinner, B. F. Contingencies of Reinforcement: A Theoretical Analysis. Appleton-Century-Crofts.
Cita estilo Chicago (17a ed.)
Skinner, Burrhus Frederic. Contingencies of Reinforcement: A Theoretical Analysis. Nueva York, EUA: Appleton-Century-Crofts.
Cita MLA (9a ed.)
Skinner, Burrhus Frederic. Contingencies of Reinforcement: A Theoretical Analysis. Appleton-Century-Crofts.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.