APA (7th ed.) Citation

Ryan, M. P., Hastorf, A. H., & Cofer, C. N. (1975). Programmed learning aid for person perception. Learning Systems Company.

Chicago Style (17th ed.) Citation

Ryan, Michael P., Albert H. Hastorf, and Charles N. Cofer. Programmed Learning Aid for Person Perception. Homewod, Illinois: Learning Systems Company, 1975.

MLA (9th ed.) Citation

Ryan, Michael P., et al. Programmed Learning Aid for Person Perception. Learning Systems Company, 1975.