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}
}