BUTLIN, J. Economics of environmental and natural resource policy#J.A. Butlin. Westiview Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBUTLIN, J.A. Economics of Environmental and Natural Resource Policy#J.A. Butlin. Westiview Press.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBUTLIN, J.A. Economics of Environmental and Natural Resource Policy#J.A. Butlin. Westiview Press.
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