Abu Hassan, R. (2007). Identifying the primary tourism product in developing Medan towards a tourist city based on tourist's travel behavior.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Abu Hassan, Rahmawaty. Identifying the Primary Tourism Product in Developing Medan Towards a Tourist City Based on Tourist's Travel Behavior. 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Abu Hassan, Rahmawaty. Identifying the Primary Tourism Product in Developing Medan Towards a Tourist City Based on Tourist's Travel Behavior. 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.