Al Ismail، H. M.، و White، G. P. (1993). THE IMPACT OF ADVANCED MANUFACTURING TECHNOLOGIES AND JOB-SKILL REQUIREMENTS ON EMPLOYEE JOB PRODUCTIVITY WORKING IN SAUDI ARABIA PETROCHEMICAL INDUSTRY (رسالة دكتوراه غير منشورة). Southern Illinois University، كاربونديل. مسترجع من http://search.mandumah.com/Record/614535
Al Ismail، Hamad Mohamad، و Gregory P. White. "THE IMPACT OF ADVANCED MANUFACTURING TECHNOLOGIES AND JOB-SKILL REQUIREMENTS ON EMPLOYEE JOB PRODUCTIVITY WORKING IN SAUDI ARABIA PETROCHEMICAL INDUSTRY" رسالة دكتوراه. Southern Illinois University، كاربونديل، 1993. مسترجع من http://search.mandumah.com/Record/614535