APA (7e ed.) Bronvermelding

Não informado. (1980). Enhanced Energy Recovery News. Business Communications.

Chicago (17e ed.) Bronvermelding

Não informado. Enhanced Energy Recovery News. Houston, Tex: Business Communications, 1980.

MLA (8e ed.) Bronvermelding

Não informado. Enhanced Energy Recovery News. Business Communications, 1980.

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