APA (7e ed.) Bronvermelding

Não informado. (1933). Population. International Union for the Scientific Investigation of Population.

Chicago (17e ed.) Bronvermelding

Não informado. Population. London: International Union for the Scientific Investigation of Population, 1933.

MLA (8e ed.) Bronvermelding

Não informado. Population. International Union for the Scientific Investigation of Population, 1933.

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