Cofer, C. N., Fitzgerald, H. E., & Hermanson, R. H. (1975). Programmed learning aid for human memory and forgetting. Learning Systems Company.
Chicago Style (17th ed.) CitationCofer, Charles N., Hiram E. Fitzgerald, and Roger H. Hermanson. Programmed Learning Aid for Human Memory and Forgetting. Homewood, Illinois: Learning Systems Company, 1975.
MLA (9th ed.) CitationCofer, Charles N., et al. Programmed Learning Aid for Human Memory and Forgetting. Learning Systems Company, 1975.
Warning: These citations may not always be 100% accurate.