APA način citiranja

Richards, R. W., & Rilling, M. (1972). Aversive aspects of a fixed-interval schedule of food reinforcement.

Čikaški stil citiranja

Richards, Ralph W., i Mark Rilling. Aversive Aspects of a Fixed-interval Schedule of Food Reinforcement. 1972.

MLA način citiranja

Richards, Ralph W., i Mark Rilling. Aversive Aspects of a Fixed-interval Schedule of Food Reinforcement. 1972.