APA (7th ed.) Citation

Petroleum Economist Cartographic (Firm), Petroleum Economist Ltd, Ernst & Young, Fuller, K., & Bush, P. (2010). National oil companies of the world (2nd ed.). Petroleum Economist Ltd..

Chicago Style (17th ed.) Citation

Petroleum Economist Cartographic (Firm), Petroleum Economist Ltd, Ernst & Young, K. Fuller, and P. Bush. National Oil Companies of the World. 2nd ed. London: Petroleum Economist Ltd., 2010.

MLA (9th ed.) Citation

Petroleum Economist Cartographic (Firm), et al. National Oil Companies of the World. 2nd ed. Petroleum Economist Ltd., 2010.