APA (7e ed.) Bronvermelding

Não informado. (1971). Current contents. Institute for Scientific Information.

Chicago (17e ed.) Bronvermelding

Não informado. Current Contents. Philadelphia, Pa: Institute for Scientific Information, 1971.

MLA (8e ed.) Bronvermelding

Não informado. Current Contents. Institute for Scientific Information, 1971.

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