APA (7e ed.) Bronvermelding

Não informado. (1971). Educational Media International. International Council for Educational Media.

Chicago (17e ed.) Bronvermelding

Não informado. Educational Media International. London: International Council for Educational Media, 1971.

MLA (8e ed.) Bronvermelding

Não informado. Educational Media International. International Council for Educational Media, 1971.

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