ミスマルパ語族
Benedicto, Elena (2002), "Verbal Classifier Systems: The Exceptional Case of Mayangna Auxiliaries." In "Proceedings of WSCLA 7th". UBC Working Papers in Linguistics 10, pp. 1–14. Vancouver, British Columbia.
Benedicto, Elena & Kenneth Hale, (2000) "Mayangna, A Sumu Language: Its Variants and Its Status within Misumalpa", in E. Benedicto, ed., The UMOP Volume on Indigenous Languages, UMOP 20, pp. 75–106. Amherst, MA: University of Massachusetts.
Colette Craig & Kenneth Hale, "A Possible Macro-Chibchan Etymon", Anthropological Linguistics Vol. 34, 1992.