APA
Willmon G. J., World Petroleum Congress (13th. : 1991 : Buenos Aires), .Prospects of upgrading canadian heavy oil bitumen to synthetic crude oil. : .
Chicago
Willmon Gordon J, World Petroleum Congress (13th. : 1991 : Buenos Aires), .Prospects of upgrading canadian heavy oil bitumen to synthetic crude oil. : .
Harvard
Willmon G. J., World Petroleum Congress (13th. : 1991 : Buenos Aires), .Prospects of upgrading canadian heavy oil bitumen to synthetic crude oil. : .
MLA
Willmon Gordon J, World Petroleum Congress (13th. : 1991 : Buenos Aires), .: . .