Elek, A. (1980). Feasibility study for the construction of economics-demographic model for Indonesia. International Labour Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रElek, Andrew. Feasibility Study for the Construction of Economics-demographic Model for Indonesia. Geneva: International Labour Office, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रElek, Andrew. Feasibility Study for the Construction of Economics-demographic Model for Indonesia. International Labour Office, 1980.
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