Virag, A. (2013). Transition in the European refining sector: Strategies to meet present and future industry challenges from a Central European perspective. Oxford Institute for Energy Studies.
Lua i Stíl Chicago (17ú heag.)Virag, A. Transition in the European Refining Sector: Strategies to Meet Present and Future Industry Challenges from a Central European Perspective. Oxford Institute for Energy Studies, 2013.
Lua MLA (9ú heag.)Virag, A. Transition in the European Refining Sector: Strategies to Meet Present and Future Industry Challenges from a Central European Perspective. Oxford Institute for Energy Studies, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.