British Institute of Learning Disabilities. British journal of learning disabilities. BILD Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBritish Institute of Learning Disabilities. British Journal of Learning Disabilities. Avon: BILD Publications.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBritish Institute of Learning Disabilities. British Journal of Learning Disabilities. BILD Publications.
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