APA (7e ed.) Bronvermelding

Não informado. (1971). Industrial Development Abstracts. United Nations, Industrial Development Organization.

Chicago (17e ed.) Bronvermelding

Não informado. Industrial Development Abstracts. New York: United Nations, Industrial Development Organization, 1971.

MLA (8e ed.) Bronvermelding

Não informado. Industrial Development Abstracts. United Nations, Industrial Development Organization, 1971.

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