OPEC. (1980). Future demand for refined products in OPEC member countries and possible export outlets. OPEC.
Chicago-Zitierstil (17. Ausg.)OPEC. Future Demand for Refined Products in OPEC Member Countries and Possible Export Outlets. Vienna: OPEC, 1980.
MLA-Zitierstil (9. Ausg.)OPEC. Future Demand for Refined Products in OPEC Member Countries and Possible Export Outlets. OPEC, 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.