Cita APA (7a ed.)

Bradley, P. G. (1967). The Economics of Crude Petroleum Production. North-Holland.

Cita Chicago Style (17a ed.)

Bradley, Paul G. The Economics of Crude Petroleum Production. Amsterdam: North-Holland, 1967.

Cita MLA (9a ed.)

Bradley, Paul G. The Economics of Crude Petroleum Production. North-Holland, 1967.