Nor Azian bt Khairuddin. (2000). Improving effectiveness in classroom teaching and learning at Commerce Department in Ungku Omar Polytechnic, Ipoh by using nominal group technique. Management Center, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nor Azian bt Khairuddin. Improving Effectiveness in Classroom Teaching and Learning at Commerce Department in Ungku Omar Polytechnic, Ipoh by Using Nominal Group Technique. Gombak, Selangor: Management Center, International Islamic University Malaysia, 2000.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Nor Azian bt Khairuddin. Improving Effectiveness in Classroom Teaching and Learning at Commerce Department in Ungku Omar Polytechnic, Ipoh by Using Nominal Group Technique. Management Center, International Islamic University Malaysia, 2000.