Ahmad Kamarul Juperi. (2013). Measuring customers' satisfaction level among medical and dental customers in University Health Centre, UPM. Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ahmad Kamarul Juperi. Measuring Customers' Satisfaction Level Among Medical and Dental Customers in University Health Centre, UPM. Kuala Lumpur: Universiti Kebangsaan Malaysia, 2013.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ahmad Kamarul Juperi. Measuring Customers' Satisfaction Level Among Medical and Dental Customers in University Health Centre, UPM. Universiti Kebangsaan Malaysia, 2013.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.