APA (7th ed.) Citation

Preen, B. S. (1976). Schooling for the mentally retarded: A historical perspective. St. Martin's Press.

Chicago Style (17th ed.) Citation

Preen, Brian Stanley. Schooling for the Mentally Retarded: A Historical Perspective. New York: St. Martin's Press, 1976.

MLA (9th ed.) Citation

Preen, Brian Stanley. Schooling for the Mentally Retarded: A Historical Perspective. St. Martin's Press, 1976.