BALLERWAHREN R., “A Study of the present social status of a group of adults who, when they were in elementary schools, were classified as mentally deficient,” Genetic Psychological Monographs, Volume 18, Number 3, June, 1936.
2.
CHARLESDON C., “Ability and Accomplishments of Persons Earlier Judged Mentally Deficient,” Genetic Psychological Monographs, Volume 47 (First Half), February, 1953.
3.
KENNEDYRUBY JO REEVES, The Social Adjustment of Morons in a Connecticut City, Governor's Commission to Study the Human Resources of the State of Connecticut, in collaboration with the Carnegie Institute of Washington, Mansfield-Southbury Training Schools, Social Service Department, Hartford, Connecticut, 1948.
4.
LORDARTHUR B., “A Survey of 449 Special Class Pupils,” Journal of Education Research, Volume 27, Number 1, September1933.
5.
PETERSONLEROY, The Mentally Retarded as Citizens, Iowa City: Unpublished Doctor's Dissertation, University of Iowa, 1959.
6.
WARNERW. L., MEEKERM., ELLISK., Social Class in America, Chicago, Science Research Association, 1949.