Dyfyniad APA

Sampson, A. (1975). The Seven Sisters: The greate oil companies and the world they made. London: Hodder and Stoughton.

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.