Mohd. Fadzillah Abdul Razak. (1997). Prevalence of psychiatric morbidity and activity of daily living (ADL) in elderly living in the community. Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Mohd. Fadzillah Abdul Razak. Prevalence of Psychiatric Morbidity and Activity of Daily Living (ADL) in Elderly Living in the Community. Kuala Lumpur: Universiti Kebangsaan Malaysia, 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Mohd. Fadzillah Abdul Razak. Prevalence of Psychiatric Morbidity and Activity of Daily Living (ADL) in Elderly Living in the Community. Universiti Kebangsaan Malaysia, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.