Natchaya chalaysap. 1994. Sentence interpretation. Bangkok:National Institute of Development Administration;
Natchaya chalaysap. (1994) Sentence interpretation (รายงานผลงานวิจัย). National Institute of Development Administration:Bangkok.
Natchaya chalaysap. Sentence interpretation. Bangkok:National Institute of Development Administration, 1994.
Natchaya chalaysap. (1994) Sentence interpretation (รายงานผลงานวิจัย). National Institute of Development Administration:Bangkok.