Citace podle APA (7th ed.)

United Nations. Department of International Economic and Social Affairs. (1989). World population at the turn of the century. United Nations.

Citace podle Chicago (17th ed.)

United Nations. Department of International Economic and Social Affairs. World Population at the Turn of the Century. New York: United Nations, 1989.

Citace podle MLA (9th ed.)

United Nations. Department of International Economic and Social Affairs. World Population at the Turn of the Century. United Nations, 1989.

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