Hartshorn, J. E. (1962). Politics snd world oil economics, an account of the international oil industry in its political environment. Praeger.
Chicago-referens (17:e uppl.)Hartshorn, J. E. Politics Snd World Oil Economics, an Account of the International Oil Industry in Its Political Environment. New York: Praeger, 1962.
MLA-referens (9:e uppl.)Hartshorn, J. E. Politics Snd World Oil Economics, an Account of the International Oil Industry in Its Political Environment. Praeger, 1962.
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