APA

Griffin W., Phillips Petroleum Company, World Petroleum Congress (15th. : 1997 : Beijing) & Phillips Petroleum Company.Global perspective on decommissioning. : .

Chicago

Griffin W.S, Phillips Petroleum Company, World Petroleum Congress (15th. : 1997 : Beijing) and Phillips Petroleum Company.Global perspective on decommissioning. : .

Harvard

Griffin W., Phillips Petroleum Company, World Petroleum Congress (15th. : 1997 : Beijing) and Phillips Petroleum Company.Global perspective on decommissioning. : .

MLA

Griffin W.S, Phillips Petroleum Company, World Petroleum Congress (15th. : 1997 : Beijing) and Phillips Petroleum Company.: . .