APA (7e ed.) Bronvermelding

Não informado. (1969). Research in Reproduction. International Planned Parenthood Federation.

Chicago (17e ed.) Bronvermelding

Não informado. Research in Reproduction. London: International Planned Parenthood Federation, 1969.

MLA (8e ed.) Bronvermelding

Não informado. Research in Reproduction. International Planned Parenthood Federation, 1969.

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