DJVU PDF Roengpitya, R. 2007, "A new look on diphthongs in Thai", in SEALS XIII Papers from the 13th Annual Meeting of the Southeast Asian Linguistics Society 2003, ed. I. Shoichi et al., Canberra, Australia, pp. 231-237. Pacific Linguistics, Research School of Pacific and Asian Studies, The Australian National University. cite.

DJVU PDF Roengpitya, R. 2002, "A Historical and Perceptual Study of Vowel Length in Thai", in Papers from the Tenth Annual Meeting of the Southeast Asian Linguistics Society, ed. M. Macken, pp. 353-366. Arizona State University, Program for Southeast Asian Studies. cite.

DJVU PDF Rungpat Roengpitya. 1998, "Can a perceptual experiment reflect tonogenesis in Tai?", in The International Conference on Tai Studies, ed. S. Burusphat, Bangkok, Thailand, pp. 361-370. Institute of Language and Culture for Rural Development, Mahidol University. cite.

DJVU PDF Roengpitya, R. 1997, "Glottal stop and glottalization in Lai (connected speech)", in Linguistics of the Tibeto-Burman Area, vol. 20, no. 2, pp. 21-56. cite.