Cita APA (7th ed.)
Wike, E. L. (1966). Secondary reinforcement: Selected experiments. Harper & Row.
Cita Chicago (17th ed.)
Wike, Edward L. Secondary Reinforcement: Selected Experiments. New York: Harper & Row, 1966.
Cita MLA (9th ed.)
Wike, Edward L. Secondary Reinforcement: Selected Experiments. Harper & Row, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.