DJVU PDF Wallace, J.M. 1966, "Katu personal pronouns", in The Mon-Khmer Studies Journal, vol. 2, pp. 55-62. cite.

DJVU PDF Blood, H. and Blood, E. 1966, "The Pronoun System of Uon Njun Mnong Ro+lo+m", in The Mon-Khmer Studies Journal, vol. 2, pp. 103-111. cite.