Abubakar, A. (2015). Financial development, impact on output and its determinants: The case of the economic community of the West African states. Kulliyyah of Economics and Management Sciences, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Abubakar, Abdulsalam. Financial Development, Impact on Output and Its Determinants: The Case of the Economic Community of the West African States. Kuala Lumpur: Kulliyyah of Economics and Management Sciences, International Islamic University Malaysia, 2015.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Abubakar, Abdulsalam. Financial Development, Impact on Output and Its Determinants: The Case of the Economic Community of the West African States. Kulliyyah of Economics and Management Sciences, International Islamic University Malaysia, 2015.