Halyani Haji Hassan. (1993). Necessity as a defence from criminal responsibility: A comparative study. International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Halyani Haji Hassan. Necessity as a Defence from Criminal Responsibility: A Comparative Study. Petaling Jaya: International Islamic University Malaysia, 1993.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Halyani Haji Hassan. Necessity as a Defence from Criminal Responsibility: A Comparative Study. International Islamic University Malaysia, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.