APA (7e ed.) Bronvermelding

Não informado. (1976). Energy information abstracts. Environment Information Center.

Chicago (17e ed.) Bronvermelding

Não informado. Energy Information Abstracts. New York: Environment Information Center, 1976.

MLA (8e ed.) Bronvermelding

Não informado. Energy Information Abstracts. Environment Information Center, 1976.

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