Namlah, A. I., & Saracevic, T. (1993). Infrastructure of information needs and resources in the country of Saudi Arabia: An assessment \. University of Missouri-Columbia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Namlah, Ali Ibrahim, و Tefko Saracevic. Infrastructure of Information Needs and Resources in the Country of Saudi Arabia: An Assessment \. Matthewi: University of Missouri-Columbia, 1993.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Namlah, Ali Ibrahim, و Tefko Saracevic. Infrastructure of Information Needs and Resources in the Country of Saudi Arabia: An Assessment \. University of Missouri-Columbia, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.