DJVU PDF Strecker, D. 1979, "A preliminary typology of tone shapes and tonal sound changes in Tai: the La-n N-a A-tones", in Studies in Tai and Mon-Khmer Phonetics and Phonology In Honour of Eugénie J.A. Henderson, ed. T.L. Thongkum et al., pp. 171-240. Chulalongkorn University Press. cite.