@book{125459,
	author = {Grossman, Herbert J.,},
	title = {Manual on terminology and classification in mental retardation /},
	publisher = {American Association on Mental Deficiency,},
	year = {1973.},
	address = {[Washington]:},
	edition = {1973 revision.},
	note = {Previous ed. prepared by R. F. Heber and published as a monograph supplement to the American journal of mental deficiency, v. 64, no. 2 (September 1959).}
}