Usman, I. S. (2014). Assessment of e-learning continuance usage in higher education institutions: A case study of IIUM. Kulliyah of Information and Communication Technology, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Usman, Ibrahim Shehu. Assessment of E-learning Continuance Usage in Higher Education Institutions: A Case Study of IIUM. Kuala Lumpur: Kulliyah of Information and Communication Technology, International Islamic University Malaysia, 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Usman, Ibrahim Shehu. Assessment of E-learning Continuance Usage in Higher Education Institutions: A Case Study of IIUM. Kulliyah of Information and Communication Technology, International Islamic University Malaysia, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.