APA (7e ed.) Bronvermelding

Não informado. (1969). Social sciences citation index. Institute for Scientific Information.

Chicago (17e ed.) Bronvermelding

Não informado. Social Sciences Citation Index. Philadelphia, Pa: Institute for Scientific Information, 1969.

MLA (8e ed.) Bronvermelding

Não informado. Social Sciences Citation Index. Institute for Scientific Information, 1969.

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