APA (7e ed.) Bronvermelding

Não informado. (1970). Energy. U.S. Department of Commerce, National Technical Information Service.

Chicago (17e ed.) Bronvermelding

Não informado. Energy. Springfield, Va: U.S. Department of Commerce, National Technical Information Service, 1970.

MLA (8e ed.) Bronvermelding

Não informado. Energy. U.S. Department of Commerce, National Technical Information Service, 1970.

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