APA (7 वां संस्करण) प्रशस्ति पत्र
Hutt, M. L., & Gibby, R. G. (1965). The mentally retarded child, development, education, and treatment (2nd ed.). Allyn and Bacon.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Hutt, Max L., और Robert Gwyn Gibby. The Mentally Retarded Child, Development, Education, and Treatment. 2nd ed. Boston: Allyn and Bacon, 1965.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Hutt, Max L., और Robert Gwyn Gibby. The Mentally Retarded Child, Development, Education, and Treatment. 2nd ed. Allyn and Bacon, 1965.
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