Siriporn Malarat. (1993) A phonology of the Nakhon Si Thammarat Malay dialect at Phothong sub-district. Mahidol University,:ม.ป.ท.Siriporn Malarat. 1993. A phonology of the Nakhon Si Thammarat Malay dialect at Phothong sub-district. ม.ป.ท.:Mahidol University,;Siriporn Malarat. A phonology of the Nakhon Si Thammarat Malay dialect at Phothong sub-district. ม.ป.ท.:Mahidol University, 1993. Print.