Fitzgerald, H. E., Bundy, R. S., Cofer, C. N., & Hermanson, R. H. (1975). Programmed learning aid for rhythm, time, and humor behavior. Learning Systems Company.
Čikaški stil citiranja (17. izdanje)Fitzgerald, Hiram E., Robert S. Bundy, Charles N. Cofer, i Roger H. Hermanson. Programmed Learning Aid for Rhythm, Time, and Humor Behavior. Homewood, Illinois: Learning Systems Company, 1975.
MLA način citiranja (9. izdanje)Fitzgerald, Hiram E., et al. Programmed Learning Aid for Rhythm, Time, and Humor Behavior. Learning Systems Company, 1975.
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