Ryan, M. P., Hastorf, A. H., & Cofer, C. N. (1975). Programmed learning aid for person perception. Learning Systems Company.
Chicago Style (17th ed.) CitationRyan, Michael P., Albert H. Hastorf, and Charles N. Cofer. Programmed Learning Aid for Person Perception. Homewod, Illinois: Learning Systems Company, 1975.
MLA (9th ed.) CitationRyan, Michael P., et al. Programmed Learning Aid for Person Perception. Learning Systems Company, 1975.
Warning: These citations may not always be 100% accurate.