AltmanR., & MeyenE. L. (1976). Research needs with severely/profoundly retarded: An interactive model. Education and Training of the Mentally Retarded, 11, 147–150.
2.
BrownL., WilliamsW., & CrownerT. (1974). A collection of papers and programs related to public school services for severely handicapped students, Vol. IV. Badger, Wisconsin: Badger School District.
3.
GearheartB. R., & LittonF. W. (1975). The trainable retarded. Saint Louis: C. V. Mosby.
4.
JordanT. E. (1976). The mentally retarded (4th Ed.). Columbus, Ohio: Charles E. Merrill.
5.
KlaberM., & ButterfieldE. (1968). Stereotyped rocking—measure of ward effectiveness. American Journal of Mental Deficiency, 73, 13–20.
6.
KolstoeO. P. (1970). Teaching educable mentally retarded children. New York: Holt, Rinehart & Winston.
7.
LentJ. R., & McLeanB. M. (1976). The trainable retarded: The technology of teaching. In HaringN. G. & SchiefelbuschR. L. (Eds.), Teaching exceptional children. New York: McGraw-Hill.
8.
LindsleyO. R. (1964). Direct measurement and prosthesis of retarded behavior. Journal of Education, 146, 62–81.
9.
LuckeyR. E., & AddisonM. R. (1974). The profoundly retarded: A new challenge for public education. Education and Training of the Mentally Retarded, 9, 123–130.
10.
SailorW., GuessD., & LavisL. (1975). Training teachers for education of the severely handicapped. Education and Training of the Mentally Retarded, 10, 201–203.
11.
TinbergenN. (1974). Ethology and stress disease. Science, 185, 20–27.