Shell International Petroleum Company, Ltd. (London). Economic Division. (1960). The outlook for energy in Asia to 1970. s.n.].
Chicago-viite (17. p.)Shell International Petroleum Company, Ltd. (London). Economic Division. The Outlook for Energy in Asia to 1970. [Londonn: s.n.], 1960.
MLA-viite (9. p.)Shell International Petroleum Company, Ltd. (London). Economic Division. The Outlook for Energy in Asia to 1970. s.n.], 1960.
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