Endangered Language Alliance
SIL Mexico has collected a useful series of papers on the grammar of Tlapanec.
Rensch, Calvin R. 1977. Classification of the Otomanguean languages and the position of Tlapanec. In David Oltrogge and Calvin R. Rensch (eds.), Two studies in Middle American and comparative linguistics, 53-108. Arlington: Summer Institute of Linguistics and the University of Texas at Arlington.
Suárez, Jorge A. 1988. Tlapaneco de Malinaltepec. (Archivo de Lenguas Indígenas de México, 12.) México: El Colégio de México. 155pp.
Wichmann, Søren. 1995. Description and typology of some grammatical categories in Azoyú Tlapanec. Ph.D. dissertation, Department of American Indian Languages and Cultures, University of Copenhagen.
See the Glottolog entry on Mephaa (Tlapanec).
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