Haas, M. R. 1946. "A Grammatical Sketch of Tunica." In Linguistic Structures of Native America, edited by Harry Hoijer. 6: 337-366. New York: Viking Fund.
Haas, Mary R. 1980. "Notes On Karok Internal Reconstruction." In American Indian and Indoeuropean Studies: Papers in Honor of Madison S.~Beeler, edited by Kathryn Klar et al.. 67-76. Hague: Mouton de Gruyter.
Haas, Mary R. 1964. "Athapaskan, Tlingit, Yuchi, and Siouan." In Actas y Memorias, 2: 495-500. México, D.F.: Instituto Nacional de Antropología e Historia.
Guerrero-Valenzuela, Lilian Graciela. The Syntax-semantic Interface in Yaqui Complex Constructions, a Role and Reference Grammar Analysis. PhD thesis, State University of New York at Buffalo, 2005.
Grinevald, Colette. 2007. "Endangered Languages of Mexico and Central America." In Language Diversity Endangered, edited by Matthias Brenzinger. 59-86. Mouton de Gruyter.