@book{West-1980,
  address    = {Bogotá},
  author     = {West, Birdie},
  publisher  = {Summer Institute of Linguistics},
  title      = {Gramática Popular del Tucano},
  year       = {1980},
  iso_code   = {tuo},
  olac_field = {semantics; general_linguistics; morphology; typology; syntax},
  wals_code  = {tuc}
}