Barrett, J. E., & Hoffmann, S. M. (1991). Neurochemical changes correlated with behavior maintained under fixed-interval and fixed-ratio schedules of reinforcement.
استشهاد بنمط شيكاغوBarrett, J E., و S M. Hoffmann. Neurochemical Changes Correlated With Behavior Maintained Under Fixed-interval and Fixed-ratio Schedules of Reinforcement. 1991.
MLA استشهادBarrett, J E., و S M. Hoffmann. Neurochemical Changes Correlated With Behavior Maintained Under Fixed-interval and Fixed-ratio Schedules of Reinforcement. 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.