Campbell, Lyle. 1979. Middle American languages. In , edited by Lyle Campbell and Marianne Mithun, pp. 902-1000. University of Texas Press, Austin. Campbell, Lyle. 1997. . Oxford University Press. Goddard, Ives. 1996. Introduction. In , edited by Ives Goddard, pp. 1-16. Handbook of North American Indians, William C. Sturtevant, general editor, Vol. 17. Smithsonian Institution, Washington, D.C. Goddard, Ives. 1999. "Native Languages and Language Families of North America." Wall Map. Lincoln, Nebraska: University of Nebraska Press. Miller, Wick R. 1983. Uto-Aztecan languages. In , edited by Alfonso Ortiz, pp. 113-124. Handbook of North American Indians. William C. Sturtevant, general editor, Vol. 10. Smithsonian Institution, Washington, D. C. Mithun, Marianne. 1999. . Cambridge University Press. ISBN 0-521-23228-7 (hbk); ISBN 0-521-29875-X. Steele, Susan. 1979. Uto-Aztecan: An assessment for historical and comparative linguistics. In , edited by Lyle Campbell and Marianne Mithun, pp. 444-544. University of Texas Press, Austin. Súarez, Jorge. 1983. . Cambridge University Press.