Umar, M. A. (2018). A framework of facilities management service user indicators through user experience to achieve service excellence in waste management services in Malaysian local governments.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Umar, Mohammed Akilu. A Framework of Facilities Management Service User Indicators Through User Experience to Achieve Service Excellence in Waste Management Services in Malaysian Local Governments. 2018.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Umar, Mohammed Akilu. A Framework of Facilities Management Service User Indicators Through User Experience to Achieve Service Excellence in Waste Management Services in Malaysian Local Governments. 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.