Citazione Stile APA (7a Edizione)

Shaffer, E. (2016). The United States and the control of world oil. Routledge Taylor and Francis Group.

Citazione stile Chigago Style (17a edizione)

Shaffer, Ed. The United States and the Control of World Oil. London: Routledge Taylor and Francis Group, 2016.

Citatione MLA (9a ed.)

Shaffer, Ed. The United States and the Control of World Oil. Routledge Taylor and Francis Group, 2016.