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دليل المستخدم
Al Heizan، A. A. H.، و Harrald، J. R. (1993). Assessing the Impact on Mis Success of Different Mechanisms for User Involvement in Relation to Specific Stages of the System Development Life Cycle (رسالة دكتوراه غير منشورة). George Washington University، واشنطن. مسترجع من http://search.mandumah.com/Record/611348
Al Heizan، Abd Allah Hassan، و John Richard Harrald. "Assessing the Impact On Mis Success of Different Mechanisms for User Involvement in Relation to Specific Stages of the System Development Life Cycle" رسالة دكتوراه. George Washington University، واشنطن، 1993. مسترجع من http://search.mandumah.com/Record/611348