@book{Knudson-1980,
  address    = {México},
  author     = {Knudson, L.},
  publisher  = {Colegio de México},
  title      = {Zoque de Chimalapa},
  year       = {1980},
  iso_code   = {zoh},
  olac_field = {general_linguistics; semantics; syntax; typology},
  wals_code  = {zch}
}