Cita APA (7a ed.)
Sampson, A. The Seven Sisters: The Great Oil Companies and the World They Made. Hodder and Stoughton.
Cita estilo Chicago (17a ed.)
Sampson, Anthony. The Seven Sisters: The Great Oil Companies and the World They Made. Londres, Inglaterra: Hodder and Stoughton.
Cita MLA (9a ed.)
Sampson, Anthony. The Seven Sisters: The Great Oil Companies and the World They Made. Hodder and Stoughton.
Precaución: Estas citas no son 100% exactas.