COFER, C. N., FITZGERALD, H. E., & HERMANSON, R. H. (1975). Programed learning aid for human memory and forgetting. Richard D. Irwin.
Chicago Style (17. basım) AtıfCOFER, Charles N., Hiram E. FITZGERALD, ve Roger H. HERMANSON. Programed Learning Aid for Human Memory and Forgetting. Homewood: Richard D. Irwin, 1975.
MLA (9th ed.) AtıfCOFER, Charles N., et al. Programed Learning Aid for Human Memory and Forgetting. Richard D. Irwin, 1975.
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