Cita APA (7th ed.)

Perry, N. (1974). Teaching the mentally retarded child (2d ed., enl.). Columbia University Press.

Cita Chicago (17th ed.)

Perry, Natalie. Teaching the Mentally Retarded Child. 2d ed., enl. New York: Columbia University Press, 1974.

Cita MLA (8th ed.)

Perry, Natalie. Teaching the Mentally Retarded Child. 2d ed., enl. Columbia University Press, 1974.