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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCollege of Speech Therapists (London, England). British Journal of Disorders of Communication: The Journal of the College of Speech Therapists, London. London: The College, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCollege of Speech Therapists (London, England). British Journal of Disorders of Communication: The Journal of the College of Speech Therapists, London. The College, 1991.
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