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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStandard, Business. Global Initiative Seeks Answers to Eco-challenges. Business Standard, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रStandard, Business. Global Initiative Seeks Answers to Eco-challenges. Business Standard, 2014.
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