Al-Shalan, I. A. I. (2001). Air Transport Systems of the Gulf Cooperation Council Countries. University of Southampton, Faculty of Science, Department of Geography.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Shalan, Ibrahim A. I. Air Transport Systems of the Gulf Cooperation Council Countries. England: University of Southampton, Faculty of Science, Department of Geography, 2001.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Shalan, Ibrahim A. I. Air Transport Systems of the Gulf Cooperation Council Countries. University of Southampton, Faculty of Science, Department of Geography, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.