Farag، W. A. (1982). Basil II "The Bulgar Slayer" (976 - 1025 a d): The Factors Which Determined the Policies of his Reign. مجلة كلية الآداب، ع3,4 ، 97 - 150. مسترجع من http://search.mandumah.com/Record/669009
Farag، Wessam A. "Basil II "The Bulgar Slayer" (976 - 1025 a D): The Factors Which Determined the Policies of His Reign." مجلة كلية الآداب ع3,4 (1982): 97 - 150. مسترجع من http://search.mandumah.com/Record/669009