Citazione Stile APA (7a Edizione)

Sampson, A. (1975). Seven Sisters: The great oil companies and the world they shaped. Bantam Book.

Citazione stile Chigago Style (17a edizione)

Sampson, Anthony. Seven Sisters: The Great Oil Companies and the World They Shaped. USA: Bantam Book, 1975.

Citatione MLA (9a ed.)

Sampson, Anthony. Seven Sisters: The Great Oil Companies and the World They Shaped. Bantam Book, 1975.