Cita APA (7th ed.)
Porter, H. P. (1930). Petroleum dictionary for office, field and factory (2a edición.). Gulf.
Cita Chicago (17th ed.)
Porter, Hollis P. Petroleum Dictionary for Office, Field and Factory. 2a edición. Houston, EUA: Gulf, 1930.
Cita MLA (9th ed.)
Porter, Hollis P. Petroleum Dictionary for Office, Field and Factory. 2a edición. Gulf, 1930.
Atenció: Aquestes cites poden no estar 100% correctes.