APA (7th ed.) Citation

Cook, R. C. (1941). Control of the petroleum industry by major oil companies. [publisher not identified].

Chicago Style (17th ed.) Citation

Cook, Roy C. Control of the Petroleum Industry by Major Oil Companies. [Washington]: [publisher not identified], 1941.

MLA (8th ed.) Citation

Cook, Roy C. Control of the Petroleum Industry by Major Oil Companies. [publisher not identified], 1941.