APA (7e ed.) Bronvermelding

Não informado. (1973). Energy resources report. Business Publishers.

Chicago (17e ed.) Bronvermelding

Não informado. Energy Resources Report. Silver Spring, Md: Business Publishers, 1973.

MLA (8e ed.) Bronvermelding

Não informado. Energy Resources Report. Business Publishers, 1973.

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