Sadan, I. A. (1997). An investigative study of the present professional preparation for teachers in Primary School in Saudi Arabia, with especial reference to Islamic and Arabic subjects. University of Hull.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sadan, Ibrahim A. An Investigative Study of the Present Professional Preparation for Teachers in Primary School in Saudi Arabia, with Especial Reference to Islamic and Arabic Subjects. Hull: University of Hull, 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sadan, Ibrahim A. An Investigative Study of the Present Professional Preparation for Teachers in Primary School in Saudi Arabia, with Especial Reference to Islamic and Arabic Subjects. University of Hull, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.