Masters, C. D. (1991). World resoruces of crude oil and natural gas. Wiley.
Cita Chicago Style (17a ed.)Masters, C. D. World Resoruces of Crude Oil and Natural Gas. Chichester, England: Wiley, 1991.
Cita MLA (8a ed.)Masters, C. D. World Resoruces of Crude Oil and Natural Gas. Wiley, 1991.
Precaución: Estas citas no son 100% exactas.