APA (7th ed.) Citation

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.) Citation

Cofer, 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.) Citation

Cofer, Charles N., et al. Programmed Learning Aid for Human Memory and Forgetting. Learning Systems Company, 1975.