Merino Garcia, P. (2005). OPEC in the 21st century. What has changed and what have we learned? Oxford Institute for Energy Studies.
Lua i Stíl Chicago (17ú heag.)Merino Garcia, P. OPEC in the 21st Century. What Has Changed and What Have We Learned? Oxford Institute for Energy Studies, 2005.
Lua MLA (9ú heag.)Merino Garcia, P. OPEC in the 21st Century. What Has Changed and What Have We Learned? Oxford Institute for Energy Studies, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.