एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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