Al Sughayir، A. A. (2004). Benchmarking as an Effective Tool to Improve the Dates Industry Performance: A Case Study of the Saudi Dates Market (رسالة ماجستير غير منشورة). University of Bradford، برادفورد. مسترجع من http://search.mandumah.com/Record/600400
Al Sughayir، Abd Alrahman. "Benchmarking As an Effective Tool to Improve the Dates Industry Performance: A Case Study of the Saudi Dates Market" رسالة ماجستير. University of Bradford، برادفورد، 2004. مسترجع من http://search.mandumah.com/Record/600400