Al Turki، S.، و Brocklehurst، F. (2011). An Examination of the Critical Success Factors of Implementing Six-Sigma in the Medical Device Sector in the Headquarters of the Saudi Food and Drug Authority (رسالة ماجستير غير منشورة). University of Portsmouth، بورتسموث. مسترجع من http://search.mandumah.com/Record/604009
Al Turki، Saud، و Fiona Brocklehurst. "An Examination of the Critical Success Factors of Implementing Six-Sigma in the Medical Device Sector in the Headquarters of the Saudi Food and Drug Authority" رسالة ماجستير. University of Portsmouth، بورتسموث، 2011. مسترجع من http://search.mandumah.com/Record/604009