Natchaya Chalaysap. (1993) The technique of word analysis. National Institute of Development Administration:ม.ป.ท.Natchaya Chalaysap. 1993. The technique of word analysis. ม.ป.ท.:National Institute of Development Administration;Natchaya Chalaysap. The technique of word analysis. ม.ป.ท.:National Institute of Development Administration, 1993. Print.