Al-Mass, A. M. (1999). Agricultural and Sand Incursion in The Al-Ahsa Oasis, Saudi Arabia. Indiana State University, Department of Geography, Geology, and Anthropology.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Mass, Ahmad Mohammad. Agricultural and Sand Incursion in The Al-Ahsa Oasis, Saudi Arabia. Indiana, U S A: Indiana State University, Department of Geography, Geology, and Anthropology, 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Mass, Ahmad Mohammad. Agricultural and Sand Incursion in The Al-Ahsa Oasis, Saudi Arabia. Indiana State University, Department of Geography, Geology, and Anthropology, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.