Shanmugavelayutham, K. (1999). Mentally retarded children and their families: Challenges ahead. Mittal Pubs.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रShanmugavelayutham, K. Mentally Retarded Children and Their Families: Challenges Ahead. Mittal Pubs, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रShanmugavelayutham, K. Mentally Retarded Children and Their Families: Challenges Ahead. Mittal Pubs, 1999.
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