DJVU PDF Proschan, F. 1993, "Khmu play languages", in The Mon-Khmer Studies Journal, vol. 23, pp. 43-65. cite.

DJVU PDF Damrong Tayanin and Lindell, K. 1993, "The Khmu cycles of 60 days and 60 years", in The Mon-Khmer Studies Journal, vol. 23, pp. 103-118. cite.