Azhar bin Abdullah. (2005). Investigation on the tailing sand from Malim Nawar for use in making sand casting mould. Kulliyah of Engineering, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Azhar bin Abdullah. Investigation on the Tailing Sand from Malim Nawar for Use in Making Sand Casting Mould. Gombak, Selangor Darul Ehsan: Kulliyah of Engineering, International Islamic University Malaysia, 2005.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Azhar bin Abdullah. Investigation on the Tailing Sand from Malim Nawar for Use in Making Sand Casting Mould. Kulliyah of Engineering, International Islamic University Malaysia, 2005.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.