Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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