APA (7e ed.) Bronvermelding

(1957). Background facts on world population and population trends. United Nations.

Chicago (17e ed.) Bronvermelding

Background Facts on World Population and Population Trends. New York: United Nations, 1957.

MLA (9e ed.) Bronvermelding

Background Facts on World Population and Population Trends. United Nations, 1957.

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