Rafique และ Saleh Muhammad. (1992) Factors associating accidents among workers in a group of industry. Mahidol University,:ม.ป.ท.Rafique และ Saleh Muhammad. 1992. Factors associating accidents among workers in a group of industry. ม.ป.ท.:Mahidol University,;Rafique และ Saleh Muhammad. Factors associating accidents among workers in a group of industry. ม.ป.ท.:Mahidol University, 1992. Print.