Cita APA

-, -. (1981). Anthony Sampson, The Seven Sisters. The great oil companies and the world they made. London, Hodder and Stoughton, 1975, pp. 334.

Citación estilo Chicago

-, -. Anthony Sampson, The Seven Sisters. The Great Oil Companies and the World They Made. London, Hodder and Stoughton, 1975, Pp. 334. 1981.

Cita MLA

-, -. Anthony Sampson, The Seven Sisters. The Great Oil Companies and the World They Made. London, Hodder and Stoughton, 1975, Pp. 334. 1981.