Muhammad Ismail bin Mohamad Yunus. (1993). The Role of expert opinion (ray'al-khabir) in islamic law of evidence: A comparative study. : International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Muhammad Ismail bin Mohamad Yunus. The Role of Expert Opinion (ray'al-khabir) in Islamic Law of Evidence: A Comparative Study. Petaling Jaya: : International Islamic University Malaysia, 1993.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Muhammad Ismail bin Mohamad Yunus. The Role of Expert Opinion (ray'al-khabir) in Islamic Law of Evidence: A Comparative Study. : International Islamic University Malaysia, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.