Wirzafeldi Sawir. (2011). A comparative study on post operative analgesia using intrathecal fentanyl with or without morphine in patient undergoing caesarean section under spinal anaesthesia. Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wirzafeldi Sawir. A Comparative Study on Post Operative Analgesia Using Intrathecal Fentanyl with or Without Morphine in Patient Undergoing Caesarean Section Under Spinal Anaesthesia. Kuala Lumpur: Universiti Kebangsaan Malaysia, 2011.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Wirzafeldi Sawir. A Comparative Study on Post Operative Analgesia Using Intrathecal Fentanyl with or Without Morphine in Patient Undergoing Caesarean Section Under Spinal Anaesthesia. Universiti Kebangsaan Malaysia, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.