APA (7e ed.) Bronvermelding

Não informado. (2004). World population. U.S. Department of Commerce, Bureau of the Census.

Chicago (17e ed.) Bronvermelding

Não informado. World Population. Washington: U.S. Department of Commerce, Bureau of the Census, 2004.

MLA (8e ed.) Bronvermelding

Não informado. World Population. U.S. Department of Commerce, Bureau of the Census, 2004.

Let op: Deze citaties zijn niet altijd 100% accuraat.