Merino Garcia, P. (2005). OPEC in the 21st century. What has changed and what have we learned? Oxford Institute for Energy Studies.
Chicago-referens (17:e uppl.)Merino Garcia, P. OPEC in the 21st Century. What Has Changed and What Have We Learned? Oxford Institute for Energy Studies, 2005.
MLA-referens (9:e uppl.)Merino Garcia, P. OPEC in the 21st Century. What Has Changed and What Have We Learned? Oxford Institute for Energy Studies, 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.