United Nations Department of International Economic and Social Affairs. (1989). Projection methods for integrating population variables into development planning. United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited Nations Department of International Economic and Social Affairs. Projection Methods for Integrating Population Variables into Development Planning. New York: United Nations, 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited Nations Department of International Economic and Social Affairs. Projection Methods for Integrating Population Variables into Development Planning. United Nations, 1989.
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