(1980). International classification of impairments, disabilities, and Handicaps.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Classification of Impairments, Disabilities, and Handicaps. 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रInternational Classification of Impairments, Disabilities, and Handicaps. 1980.
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