Yousef، A. (1993). National Commissions and Information: Part II Libraries and Documentation Centres of National Commissions. مجلة التربية، س22, ع107 ، 21 - 24. مسترجع من http://search.mandumah.com/Record/681944
Yousef، Atif. "National Commissions and Information: Part II Libraries and Documentation Centres of National Commissions." مجلة التربية س22, ع107 (1993): 21 - 24. مسترجع من http://search.mandumah.com/Record/681944