Thiensiri Theveenugul. (2014) A study on customer perceived service quality of online travel agents (otas) : a case study of foreign users in Bangkok, Thailand. Mahidol university:ม.ป.ท.Thiensiri Theveenugul. 2014. A study on customer perceived service quality of online travel agents (otas) : a case study of foreign users in Bangkok, Thailand. ม.ป.ท.:Mahidol university;Thiensiri Theveenugul. A study on customer perceived service quality of online travel agents (otas) : a case study of foreign users in Bangkok, Thailand. ม.ป.ท.:Mahidol university, 2014. Print.