Elwan, I. (1985). Yugoslavia: Constraints and prospects for restructuring the energy sector. World Bank.
Dyfyniad Arddull ChicagoElwan, Ibrahim. Yugoslavia: Constraints and Prospects for Restructuring the Energy Sector. Washington: World Bank, 1985.
Dyfyniad MLAElwan, Ibrahim. Yugoslavia: Constraints and Prospects for Restructuring the Energy Sector. World Bank, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.