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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMoving Ahead with ISO 14000improving Environmental Management and Advancing Sustainable Decelopment. John Wiley & Sons, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMoving Ahead with ISO 14000improving Environmental Management and Advancing Sustainable Decelopment. John Wiley & Sons, 1997.
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