Cita APA (7a ed.)

Cooper, L. J. (1999). Use of a concurrent operants paradigm to evaluate positive reinforcers during treatment of food refusal. [s.n.].

Cita Chicago Style (17a ed.)

Cooper, Linda J. Use of a Concurrent Operants Paradigm to Evaluate Positive Reinforcers During Treatment of Food Refusal. [S.l.]: [s.n.], 1999.

Cita MLA (9a ed.)

Cooper, Linda J. Use of a Concurrent Operants Paradigm to Evaluate Positive Reinforcers During Treatment of Food Refusal. [s.n.], 1999.