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دليل المستخدم
Al Buraikan، O. N.، و Gregory، T. B. (1988). IDENTIFICATION OF THE DROPOUT RATES IN SAUDI ARABIAN SCHOOLS AND AN ANALYSIS OF THE REASONS FOR THE DROPOUT PROBLEM IN EIGHT RIYADH SECONDARY SCHOOLS (رسالة دكتوراه غير منشورة). Indiana University، إنديانا. مسترجع من http://search.mandumah.com/Record/612637
Al Buraikan، Othman Naser، و Thomas B. Gregory. "IDENTIFICATION OF THE DROPOUT RATES IN SAUDI ARABIAN SCHOOLS AND AN ANALYSIS OF THE REASONS FOR THE DROPOUT PROBLEM IN EIGHT RIYADH SECONDARY SCHOOLS" رسالة دكتوراه. Indiana University، إنديانا، 1988. مسترجع من http://search.mandumah.com/Record/612637