APA引文

Cofer, C. N. (1972). Programmed learning aid for introduction to psychology. Learning systems co..

Chicago Style (17th ed.) Citation

Cofer, Charles N. Programmed Learning Aid for Introduction to Psychology. Illinois: Learning systems co., 1972.

MLA引文

Cofer, Charles N. Programmed Learning Aid for Introduction to Psychology. Learning systems co., 1972.