APA (7e ed.) Bronvermelding

Não informado. (1971). Research Policy. North Holland Publishing.

Chicago (17e ed.) Bronvermelding

Não informado. Research Policy. Amsterdam: North Holland Publishing, 1971.

MLA (8e ed.) Bronvermelding

Não informado. Research Policy. North Holland Publishing, 1971.

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