APA (7th ed.) Citation

Hardwicke, R. E. (1958). The oilman's barrel ([1st ed.].). University of Oklahoma Press.

Chicago Style (17th ed.) Citation

Hardwicke, Robert Etter. The Oilman's Barrel. [1st ed.]. Norman: University of Oklahoma Press, 1958.

MLA (9th ed.) Citation

Hardwicke, Robert Etter. The Oilman's Barrel. [1st ed.]. University of Oklahoma Press, 1958.