Othman Minudin. (1985). The role of the secondary school principal as perceived by secondary school principals in Sabah, Malaysia. University of Microfilms International.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Othman Minudin. The Role of the Secondary School Principal as Perceived by Secondary School Principals in Sabah, Malaysia. Ann Arbor, Michigan: University of Microfilms International, 1985.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Othman Minudin. The Role of the Secondary School Principal as Perceived by Secondary School Principals in Sabah, Malaysia. University of Microfilms International, 1985.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.