Tillman, G. (1981). Environmentally sound small-scale water projects. Coordination in Development ; Volunteers in Technical Assistance.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTillman, Gus. Environmentally Sound Small-scale Water Projects. [New York, N.Y.] : [Mt. Rainier, Md.]: Coordination in Development ; Volunteers in Technical Assistance, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रTillman, Gus. Environmentally Sound Small-scale Water Projects. Coordination in Development ; Volunteers in Technical Assistance, 1981.
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