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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican, Psychological Association. Publication Manual of the American Psycological Association. APA, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAmerican, Psychological Association. Publication Manual of the American Psycological Association. APA, 2011.
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