De Clerck. Sign Language, Sustainable Development, and Equal Opportunities. Gallaudet University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDe Clerck. Sign Language, Sustainable Development, and Equal Opportunities. Gallaudet University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDe Clerck. Sign Language, Sustainable Development, and Equal Opportunities. Gallaudet University Press.
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