APA (7e ed.) Bronvermelding

Não informado. (1957). Scientific world. World Federation of Scientific Workers.

Chicago (17e ed.) Bronvermelding

Não informado. Scientific World. London: World Federation of Scientific Workers, 1957.

MLA (8e ed.) Bronvermelding

Não informado. Scientific World. World Federation of Scientific Workers, 1957.

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