Gordon, S.Facts about sex: A basic guide. New York: John Day, 1970.
2.
Gordon, S.Planning your family. Syracuse, N.Y.: New Readers Press, 1971.
3.
Johnson, W.R.Sex education and the mentally retarded. Journal of Sex Research , 1969, 5, 3.
4.
Love, sex, and birth control for the mentally retarded. A guide for parents. Philadelphia: Planned Parenthood of Southeastern Pennsylvania , 1971.
5.
A resource guide in sex education for the mentally retarded. Washington: Sex Information and Education Council of the U.S. and American Association for Health, Physical Education and Recreation , 1971.
6.
Rosen, M.Conditioning appropriate heterosexual behavior in mentally and socially handicapped populations. Training School Bulletin, 1970 , 66, 4.
7.
Social and sexual development: A guide for teachers of the handicapped. Des Moines: University of Iowa and Iowa State Department of Public Instruction, Special Education Curriculum Development Center, 1971.