Anderson, D. (1993). The Cost-effectiveness Of Gef Projects Dennis Anderson, Robert H. Williams. The Global Environment Facility.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAnderson, Dennis. The Cost-effectiveness Of Gef Projects Dennis Anderson, Robert H. Williams. The Global Environment Facility, 1993.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAnderson, Dennis. The Cost-effectiveness Of Gef Projects Dennis Anderson, Robert H. Williams. The Global Environment Facility, 1993.
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