Citazione Stile APA (7a Edizione)

Hartshorn, J. E. (1962). Politics snd world oil economics, an account of the international oil industry in its political environment. Praeger.

Citazione stile Chigago Style (17a edizione)

Hartshorn, J. E. Politics Snd World Oil Economics, an Account of the International Oil Industry in Its Political Environment. New York: Praeger, 1962.

Citatione MLA (9a ed.)

Hartshorn, J. E. Politics Snd World Oil Economics, an Account of the International Oil Industry in Its Political Environment. Praeger, 1962.