APA

Gibson J., CEOLandmark Graphics Corporation, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary A. C. & CEOLandmark Graphics Corporation.Changes in E&P Data Management. : .

Chicago

Gibson John, CEOLandmark Graphics Corporation, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary Alberta Canada) and CEOLandmark Graphics Corporation.Changes in E&P Data Management. : .

Harvard

Gibson J., CEOLandmark Graphics Corporation, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary A. C. and CEOLandmark Graphics Corporation.Changes in E&P Data Management. : .

MLA

Gibson John, CEOLandmark Graphics Corporation, World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary Alberta Canada) and CEOLandmark Graphics Corporation.: . .