APA (7e ed.) Bronvermelding

Não informado. (1987). FID Directory. International Federation for Information and Documentation.

Chicago (17e ed.) Bronvermelding

Não informado. FID Directory. The Hague, Holanda: International Federation for Information and Documentation, 1987.

MLA (8e ed.) Bronvermelding

Não informado. FID Directory. International Federation for Information and Documentation, 1987.

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