Shi และ Jie. (2006) Identification of contractor prequalification criteria used in Tianjin Roadway Administration Bureau, China /. Kasetsart University,:ม.ป.ท.Shi และ Jie. 2006. Identification of contractor prequalification criteria used in Tianjin Roadway Administration Bureau, China /. ม.ป.ท.:Kasetsart University,;Shi และ Jie. Identification of contractor prequalification criteria used in Tianjin Roadway Administration Bureau, China /. ม.ป.ท.:Kasetsart University, 2006. Print.