Mustafa, A. S. (2000). Incorporating local level market behaviour into early warning and food information systems: The case of the semi arid zone in Sudan. Fakulti Sains Kemasyarakatan dan Kemanusiaan, Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Mustafa, Ahmed Suleiman. Incorporating Local Level Market Behaviour into Early Warning and Food Information Systems: The Case of the Semi Arid Zone in Sudan. Bangi: Fakulti Sains Kemasyarakatan dan Kemanusiaan, Universiti Kebangsaan Malaysia, 2000.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Mustafa, Ahmed Suleiman. Incorporating Local Level Market Behaviour into Early Warning and Food Information Systems: The Case of the Semi Arid Zone in Sudan. Fakulti Sains Kemasyarakatan dan Kemanusiaan, Universiti Kebangsaan Malaysia, 2000.