Al Najjar، D. M.، Al Rusan، M.، و Gharaibeh، H. S. (2010). Developing a Multi Stage Predicting System for Corporate Credit Rating and its relationship with Capital Structure: An Empirical Study of a Sample of Industrial Compan ies listed at Amman Stock Exchange (ASE) (رسالة دكتوراه غير منشورة). جامعة عمان العربية، عمان. مسترجع من http://search.mandumah.com/Record/769087
Al Najjar، Dana Mohammad، Muhannad Al Rusan، و Hisham Saleh Gharaibeh. "Developing a Multi Stage Predicting System for Corporate Credit Rating and Its Relationship With Capital Structure: An Empirical Study of a Sample of Industrial Compan Ies Listed At Amman Stock Exchange (ASE)" رسالة دكتوراه. جامعة عمان العربية، عمان، 2010. مسترجع من http://search.mandumah.com/Record/769087