Radwan، Z. R.، و Donnell، M. L. (1997). Evaluation of the Effectiveness of A Computer Assisted Intelligent Tutoring System Model Developed to Improve Specific Learning Skills of Special Needs Students (رسالة دكتوراه غير منشورة). George Washington University، واشنطن. مسترجع من http://search.mandumah.com/Record/611057
Radwan، Zohair Rasheed، و Michael Lee Donnell. "Evaluation of the Effectiveness of A Computer Assisted Intelligent Tutoring System Model Developed to Improve Specific Learning Skills of Special Needs Students" رسالة دكتوراه. George Washington University، واشنطن، 1997. مسترجع من http://search.mandumah.com/Record/611057