Abdullah Mohammad Khalid Hafiz. (2008). Effects of online workpiece preheating on the machinability of hardened steel AISI H13 during end milling and development of prediction models using RSM. Kulliyyah of Engineering, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Abdullah Mohammad Khalid Hafiz. Effects of Online Workpiece Preheating on the Machinability of Hardened Steel AISI H13 During End Milling and Development of Prediction Models Using RSM. Gombak, Selangor: Kulliyyah of Engineering, International Islamic University Malaysia, 2008.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Abdullah Mohammad Khalid Hafiz. Effects of Online Workpiece Preheating on the Machinability of Hardened Steel AISI H13 During End Milling and Development of Prediction Models Using RSM. Kulliyyah of Engineering, International Islamic University Malaysia, 2008.