Pacharin Sintipong และ Wanna Chareonchang. (2008) Oral communication problems of Thai and foreign employees in Benchmark Electronics (Thailand) Public Co. Ltd. Kasetsart University,:ม.ป.ท.Pacharin Sintipong และ Wanna Chareonchang. 2008. Oral communication problems of Thai and foreign employees in Benchmark Electronics (Thailand) Public Co. Ltd. ม.ป.ท.:Kasetsart University,;Pacharin Sintipong และ Wanna Chareonchang. Oral communication problems of Thai and foreign employees in Benchmark Electronics (Thailand) Public Co. Ltd. ม.ป.ท.:Kasetsart University, 2008. Print.