APA
ECONOMIC AND SOCIAL AFFAIRS (Dept. of-) P. (., ECONOMIC AND SOCIAL AFFAIRS (Dept. of-) P. (., . (1999). World population prospects. New York: United Nations.
Chicago
ECONOMIC AND SOCIAL AFFAIRS (Dept. of-) POPULATION (Divison-), ECONOMIC AND SOCIAL AFFAIRS (Dept. of-) POPULATION (Divison-), . 1999. World population prospects. New York: United Nations.
Harvard
ECONOMIC AND SOCIAL AFFAIRS (Dept. of-) P. (., ECONOMIC AND SOCIAL AFFAIRS (Dept. of-) P. (., . (1999). World population prospects. New York: United Nations.
MLA
ECONOMIC AND SOCIAL AFFAIRS (Dept. of-) POPULATION (Divison-), ECONOMIC AND SOCIAL AFFAIRS (Dept. of-) POPULATION (Divison-), . World population prospects. New York: United Nations. 1999.
