Perry, N. (1974). Teaching the mentally retarded child (2. ed., enlarged to survey trainable retardates and their school neds.). Columbia Univ. Press.
Chicago-Zitierstil (17. Ausg.)Perry, Natalie. Teaching the Mentally Retarded Child. 2. ed., enlarged to survey trainable retardates and their school neds. New York: Columbia Univ. Press, 1974.
MLA-Zitierstil (9. Ausg.)Perry, Natalie. Teaching the Mentally Retarded Child. 2. ed., enlarged to survey trainable retardates and their school neds. Columbia Univ. Press, 1974.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.