APA (7e ed.) Bronvermelding

United States. Energy Information Administration. Office of Oil and Gas. (1994). Petroleum marketing annual. The Office : Supt. of Docs., U.S. G.P.O. [distributor.

Chicago (17e ed.) Bronvermelding

United States. Energy Information Administration. Office of Oil and Gas. Petroleum Marketing Annual. Washington, D.C.: The Office : Supt. of Docs., U.S. G.P.O. [distributor, 1994.

MLA (9e ed.) Bronvermelding

United States. Energy Information Administration. Office of Oil and Gas. Petroleum Marketing Annual. The Office : Supt. of Docs., U.S. G.P.O. [distributor, 1994.

Let op: Deze citaties zijn niet altijd 100% accuraat.