APA

Peebles M. W., Shell, World Petroleum Congress (11th. : 1983 : London) & Shell.World natural gas supply and demand considerations, with particular reference to the development of the development of the international gas trade. : .

Chicago

Peebles Malcolm W.H, Shell, World Petroleum Congress (11th. : 1983 : London) and Shell.World natural gas supply and demand considerations, with particular reference to the development of the development of the international gas trade. : .

Harvard

Peebles M. W., Shell, World Petroleum Congress (11th. : 1983 : London) and Shell.World natural gas supply and demand considerations, with particular reference to the development of the development of the international gas trade. : .

MLA

Peebles Malcolm W.H, Shell, World Petroleum Congress (11th. : 1983 : London) and Shell.: . .