Barrera-Rey, F. (1995). The effects of vertical integration on oil company performance. Oxford Institute for Energy Studies.
Chicago-referens (17:e uppl.)Barrera-Rey, F. The Effects of Vertical Integration on Oil Company Performance. Oxford Institute for Energy Studies, 1995.
MLA-referens (9:e uppl.)Barrera-Rey, F. The Effects of Vertical Integration on Oil Company Performance. Oxford Institute for Energy Studies, 1995.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.