APA

Organization of Arab Petroleum Exporting Countries O., World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires), .Hydrocarbon resources. : .

Chicago

Organization of Arab Petroleum Exporting Countries OAPEC, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires), .Hydrocarbon resources. : .

Harvard

Organization of Arab Petroleum Exporting Countries O., World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires), .Hydrocarbon resources. : .

MLA

Organization of Arab Petroleum Exporting Countries OAPEC, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires), .: . .