Berry, P. (1976). Language and communication in the mentally handicapped. University Park Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBerry, Paul. Language and Communication in the Mentally Handicapped. Baltimore: University Park Press, 1976.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBerry, Paul. Language and Communication in the Mentally Handicapped. University Park Press, 1976.
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