Al Zahrani، R. S.، و Ballard، R. (1993). Users' Satisfaction or the Library Services at the Institute Of Public Administration (IPA) Libraries in the Kingdom of Saudi Arabia (رسالة ماجستير غير منشورة). North Carolina Central University، رالي. مسترجع من http://search.mandumah.com/Record/618133
Al Zahrani، Rashed S.، و Robert Ballard. "Users' Satisfaction or the Library Services At the Institute Of Public Administration (IPA) Libraries in the Kingdom of Saudi Arabia" رسالة ماجستير. North Carolina Central University، رالي، 1993. مسترجع من http://search.mandumah.com/Record/618133