Trích dẫn APA

Sampson, A. (1975). The seven sisters: The greate oil companies and the world they shaped. New York: Bantam Books, Inc.

Trích dẫn kiểu Chicago

Sampson, Anthony. The Seven Sisters: The Greate Oil Companies and the World They Shaped. New York: Bantam Books, Inc, 1975.

Trích dẫn MLA

Sampson, Anthony. The Seven Sisters: The Greate Oil Companies and the World They Shaped. New York: Bantam Books, Inc, 1975.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.