APA (7th ed.) Citation

Evans, J. (1986). OPEC, its member states and the world energy market. Longman.

Chicago Style (17th ed.) Citation

Evans, John. OPEC, Its Member States and the World Energy Market. Harlow, Essex, U.K: Longman, 1986.

MLA (9th ed.) Citation

Evans, John. OPEC, Its Member States and the World Energy Market. Longman, 1986.