APA (7e ed.) Bronvermelding

Não informado. (1978). Industry and Environment. United Nations Environment Programme.

Chicago (17e ed.) Bronvermelding

Não informado. Industry and Environment. Paris: United Nations Environment Programme, 1978.

MLA (8e ed.) Bronvermelding

Não informado. Industry and Environment. United Nations Environment Programme, 1978.

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