Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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