BergaminiD., Mathematics. New York: Time, Inc. (LIFE SCIENCE LIBRARY), 1963.
2.
EndsA. W., Proficient teaching: Communication in process. In WimanR. V.MeierhenryW. C. (Eds.), Educational media: Theory into practice. Columbus: Charles E. Merrill Co., 1969.
3.
Los Angeles City Schools, Independent work for young children (Rev, ed.). Division of Instructional Services, Pub. No. EC-172, 1958.
4.
OettingerA. G., Run, computer, run: The mythology of educational innovation. Cambridge: Harvard University Press, 1969.
5.
SteppR. E., Utilization of educational media in the education of the acoustically handicapped student. In BergF. S.FletcherS. G. (Eds.), The hard of hearing child. New York: Grune and Stratton, 1970.