(2009). CSD Policy Brief No. 18, Better Governance for Sustainable Energy Sector of Bulgaria, Diversification and Security. Centăr za izsledvane na demokracijata.
Chicago-Zitierstil (17. Ausg.)CSD Policy Brief No. 18, Better Governance for Sustainable Energy Sector of Bulgaria, Diversification and Security. Sofia [Bulgaria]: Centăr za izsledvane na demokracijata, 2009.
MLA-Zitierstil (9. Ausg.)CSD Policy Brief No. 18, Better Governance for Sustainable Energy Sector of Bulgaria, Diversification and Security. Centăr za izsledvane na demokracijata, 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.