DJVU PDF APILUCK Tumtavitikul. 1993. Perhaps, the tones are in the consonants?. MKS 23:11-41.
DJVU PDF APILUCK Tumtavitikul. 1996. The mid-central vowel [ə] in Thai. MKS 26:65-77.
DJVU PDF APILUCK Tumtavitikul. 1997. Reflection on the X' category in Thai. MKS 27:307-316.