Pickett, Velma and Black, Cheryl. 2001. Gramatica Popular del Zapoteco del Istmo. Verano: Instituto Lingüístico de Verano.
@book{sinnemakizeromarking-Pickett2001, address = {Verano}, author = {Pickett, Velma and Black, Cheryl}, publisher = {Instituto Lingüístico de Verano}, title = {Gramatica Popular del Zapoteco del Istmo}, year = {2001} }