Kunlaphak Kongsuwannakul และ Namtip Pingkarawat. (2005) Characteristic features in English acknowledgements written by Thai graduates : indicators for Thai English. Chulalongkorn University:ม.ป.ท.Kunlaphak Kongsuwannakul และ Namtip Pingkarawat. 2005. Characteristic features in English acknowledgements written by Thai graduates : indicators for Thai English. ม.ป.ท.:Chulalongkorn University;Kunlaphak Kongsuwannakul และ Namtip Pingkarawat. Characteristic features in English acknowledgements written by Thai graduates : indicators for Thai English. ม.ป.ท.:Chulalongkorn University, 2005. Print.