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Foreman, John. 2006. The Morphosyntax of Subjects in Macuiltianguis Zapotec. Ph.D. Dissertation, UCLA.
Nellis, Neil and Jane Goodner Nellis. 1983. Diccionario Zapoteco de Juarez. Instituto Lingüístico de Verano. Mexico.
Bartholomew, Doris A. 1983. Grammatica Zapoteca, in Neil Nellis and Jane Goodner Nellis Diccionario Zapoteco de Juarez Instituto Lingüístico de Verano. Mexico.
Bickmore, Lee S. and George A. Broadwell. 1998. High tone docking in Sierra Juárez Zapotec. International Journal of American Linguistics, 64:37-67.
Gibbs, William P. 1977. Discourse elements in Sierra de Juarez Zapotec. M.A. thesis. University of Texas at Arlington.