APA (7e ed.) Bronvermelding

Não informado. (1971). Euro abstracts. Commission of the European Communities.

Chicago (17e ed.) Bronvermelding

Não informado. Euro Abstracts. Luxembourg: Commission of the European Communities, 1971.

MLA (8e ed.) Bronvermelding

Não informado. Euro Abstracts. Commission of the European Communities, 1971.

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