United Nations. Dept. of International Economic and Social Affairs. (1990). MortPak and MortPak-Lite upgrades: Version 3.0 of the United Nations software packages for mortality measurement. United Nations.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)United Nations. Dept. of International Economic and Social Affairs. MortPak and MortPak-Lite Upgrades: Version 3.0 of the United Nations Software Packages for Mortality Measurement. New York: United Nations, 1990.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)United Nations. Dept. of International Economic and Social Affairs. MortPak and MortPak-Lite Upgrades: Version 3.0 of the United Nations Software Packages for Mortality Measurement. United Nations, 1990.
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