Jahr : 2011
- Washington, DC : The World Bank, Middle East and North Africa Region, Poverty Reduction and Economic Management Unit, 2011 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2011
- Washington, DC : The World Bank, Middle East and North Africa Region, Poverty Reduction and Economic Management Unit, 2011 ; Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2011