APA
DeSorcy G., Energy Resources Conservation Board, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) & Energy Resources Conservation Board.Estimation methods for proved recoverable reserves of oil and gas. : .
Chicago
DeSorcy G.J, Energy Resources Conservation Board, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and Energy Resources Conservation Board.Estimation methods for proved recoverable reserves of oil and gas. : .
Harvard
DeSorcy G., Energy Resources Conservation Board, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and Energy Resources Conservation Board.Estimation methods for proved recoverable reserves of oil and gas. : .
MLA
DeSorcy G.J, Energy Resources Conservation Board, World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest) and Energy Resources Conservation Board.: . .