Kovacevic, A. (2007). The potential contribution of natural gas to sustainable development in South Eastern Europe. Oxford Institute for Energy Studies.
Čikaški stil citiranja (17. izdanje)Kovacevic, A. The Potential Contribution of Natural Gas to Sustainable Development in South Eastern Europe. Oxford Institute for Energy Studies, 2007.
MLA način citiranja (9. izdanje)Kovacevic, A. The Potential Contribution of Natural Gas to Sustainable Development in South Eastern Europe. Oxford Institute for Energy Studies, 2007.
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