DJVU PDF Barker, M. 1993, "Bibliography of Mường and other Vietic language groups, with notes", in The Mon-Khmer Studies Journal, vol. 23, pp. 197-243. cite.

DJVU PDF Nguyễn Văn Tài and Barker, M. 1993, "Nguồn: A dialect of Vietnamese or a dialect of Mường?", in The Mon-Khmer Studies Journal, vol. 22, pp. 231-244. cite.