Nor Hafizah Shahri. (2013). Estimation of direct cost of non-steroidal anti inflammatory drugs (NSAIDS) duplicate therapy among outpatient treated in cardiology clinic at Universiti Kebangsaan Malaysia Medical Centre (UKMMC). Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nor Hafizah Shahri. Estimation of Direct Cost of Non-steroidal Anti Inflammatory Drugs (NSAIDS) Duplicate Therapy Among Outpatient Treated in Cardiology Clinic at Universiti Kebangsaan Malaysia Medical Centre (UKMMC). Kuala Lumpur: Universiti Kebangsaan Malaysia, 2013.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Nor Hafizah Shahri. Estimation of Direct Cost of Non-steroidal Anti Inflammatory Drugs (NSAIDS) Duplicate Therapy Among Outpatient Treated in Cardiology Clinic at Universiti Kebangsaan Malaysia Medical Centre (UKMMC). Universiti Kebangsaan Malaysia, 2013.