Ø§Ù„Ù†ÙˆØ±, Ø., & Ø§ØÙ…Ø¯, Ø. 2012 Jan 1. ØªÙ‚ÙˆÙŠÙ… ØªØ¬Ø±Ø¨Ø© Ø§Ù„Ù…Ø±Ø§Ø¬Ø¹Ø© Ø§Ù„Ø¨ÙŠØ¦ÙŠØ© ÙÙŠ Ø¯ÙŠÙˆØ§Ù† Ø§Ù„Ù…Ø±Ø§Ø¬Ø¹Ø© Ø§Ù„Ù‚ÙˆÙ…ÙŠ - Ø§Ù„Ø³ÙˆØ¯Ø§Ù† Ù…Ù„Ø®Øµ Ø§Ù„Ø¯Ø±Ø§Ø³Ø©. Gezira Journal of Economic and Social Sciences. [Online] 3:1&2