APA
Matthews C., Shell, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) & Shell.Thermal recovery of petroleum. : .
Chicago
Matthews C.S, Shell, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Shell.Thermal recovery of petroleum. : .
Harvard
Matthews C., Shell, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Shell.Thermal recovery of petroleum. : .
MLA
Matthews C.S, Shell, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston) and Shell.: . .