APA (7th ed.) Citation

Petroleum Economist Ltd, Petroleum Economist Cartographic (Firm), Repsol (Firm), Fuller, K., & Bush, P. (2011). World oil & gas map (2011/2012 ed.). Petroleum Economist Ltd..

Chicago Style (17th ed.) Citation

Petroleum Economist Ltd, Petroleum Economist Cartographic (Firm), Repsol (Firm), K. Fuller, and P. Bush. World Oil & Gas Map. 2011/2012 ed. London: Petroleum Economist Ltd., 2011.

MLA (9th ed.) Citation

Petroleum Economist Ltd, et al. World Oil & Gas Map. 2011/2012 ed. Petroleum Economist Ltd., 2011.