Caldwell, L. K. (1991). International environmental policy: Emergence and dimensions. East-west Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCaldwell, Lynton Keith. International Environmental Policy: Emergence and Dimensions. East-west Press, 1991.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCaldwell, Lynton Keith. International Environmental Policy: Emergence and Dimensions. East-west Press, 1991.
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