Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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