Clark, Lorenzo and de Clark, Nancy Davis. 1974. Vocabulario Popoluca de Sayula. México, D. F.: Instituto Lingüístico de Verano.
@book{Clark-and-Clark-1974, address = {México, D. F.}, author = {Clark, Lorenzo and de Clark, Nancy Davis}, publisher = {Instituto Lingüístico de Verano}, title = {Vocabulario Popoluca de Sayula}, year = {1974}, iso_code = {pos}, olac_field = {typology; general_linguistics; syntax}, wals_code = {say} }