References
- May, Mark A., and Lumsdaine, Arthur A., Learning From Films (New Haven: Yale University Press, 1958).
- Osgood, Charles E., Suci, George J., and Tannenbaum, Percy H., The Measurement of Meaning (Urbana, Illinois, University of Illinois Press, 1957).
- U. S. Army and U. S. Navy, Instructional Film Research, 1918-1950. NAVEXOS P -977. (New York: U. S. Naval Training Device Center, Port Washington, Long Island, New York, 1956).
- Walker, Helen, and Lev, Joseph, Statistical Inference (New York: Henry Holt and Co. 1953).