Abu-Nayyan, I. S. (1990). The Effect of knowledge base on acquisition of new domain-related information with learning disabled students \. University of Northern Colorado.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Abu-Nayyan, Ibrahim Saad. The Effect of Knowledge Base on Acquisition of New Domain-related Information with Learning Disabled Students \. Colorado,USA: University of Northern Colorado, 1990.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Abu-Nayyan, Ibrahim Saad. The Effect of Knowledge Base on Acquisition of New Domain-related Information with Learning Disabled Students \. University of Northern Colorado, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.