APA (7e ed.) Bronvermelding

Não informado. (1990). Science watch. Institute for Scientific Information.

Chicago (17e ed.) Bronvermelding

Não informado. Science Watch. Philadelphia, Pa: Institute for Scientific Information, 1990.

MLA (8e ed.) Bronvermelding

Não informado. Science Watch. Institute for Scientific Information, 1990.

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