Citação norma APA

(1949). Petroleum: The story of an American industry / prepared and published by American petroleum institute.

Citação norma Chicago

Petroleum: The Story of an American Industry / Prepared and Published by American Petroleum Institute. 1949.

Citação norma MLA

Petroleum: The Story of an American Industry / Prepared and Published by American Petroleum Institute. 1949.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.