Hoffer, M. M. Symposium on Orthopedic surgery in the mentally retarded.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHoffer, M. Mark. Symposium on Orthopedic Surgery in the Mentally Retarded.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHoffer, M. Mark. Symposium on Orthopedic Surgery in the Mentally Retarded.
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