APA (7th ed.) Citation

Petroleum Economist Cartographic (Firm), Fuller, K., & Bush, P. (2014). North America shale gas map (Second edition.). Petroleum Economist Ltd..

Chicago Style (17th ed.) Citation

Petroleum Economist Cartographic (Firm), K. Fuller, and P. Bush. North America Shale Gas Map. Second edition. London: Petroleum Economist Ltd., 2014.

MLA (9th ed.) Citation

Petroleum Economist Cartographic (Firm), et al. North America Shale Gas Map. Second edition. Petroleum Economist Ltd., 2014.