Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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