APA (7th ed.) Citation

(2008). Oil & gas map of Western, Central and Eastern Europe (2008 ed.). Petroleum Economist u.a.

Chicago Style (17th ed.) Citation

Oil & Gas Map of Western, Central and Eastern Europe. 2008 ed. London: Petroleum Economist u.a, 2008.

MLA (9th ed.) Citation

Oil & Gas Map of Western, Central and Eastern Europe. 2008 ed. Petroleum Economist u.a, 2008.