APA (7th ed.) Citation

Petroleum Economist Ltd. (1997). World power map. Petroleum Economist.

Chicago Style (17th ed.) Citation

Petroleum Economist Ltd. World Power Map. London: Petroleum Economist, 1997.

MLA (9th ed.) Citation

Petroleum Economist Ltd. World Power Map. Petroleum Economist, 1997.

Warning: These citations may not always be 100% accurate.