Citazione Stile APA (7a Edizione)

Sampson, A. (1975). The seven sisters: The great oil companies and the world they made. Hodder and Stoughton.

Citazione stile Chigago Style (17a edizione)

Sampson, Anthony. The Seven Sisters: The Great Oil Companies and the World They Made. London: Hodder and Stoughton, 1975.

Citatione MLA (9a ed.)

Sampson, Anthony. The Seven Sisters: The Great Oil Companies and the World They Made. Hodder and Stoughton, 1975.