Working Party on Earthmoving Operations & United Nations. Economic Commission for Asia and the Far East. Bureau of Flood Control and Water Resources Development. (1961). Earthmoving by manual labour and machines: (report and discussion papers of the Working Party on Earthmoving Operations). United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorking Party on Earthmoving Operations और United Nations. Economic Commission for Asia and the Far East. Bureau of Flood Control and Water Resources Development. Earthmoving by Manual Labour and Machines: (report and Discussion Papers of the Working Party on Earthmoving Operations). Bangkok: United Nations, 1961.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWorking Party on Earthmoving Operations और United Nations. Economic Commission for Asia and the Far East. Bureau of Flood Control and Water Resources Development. Earthmoving by Manual Labour and Machines: (report and Discussion Papers of the Working Party on Earthmoving Operations). United Nations, 1961.