@misc{Wheeler-1970,
  author     = {Wheeler, A.},
  school     = {University of California at Berkeley},
  title      = {Grammar of the Siona Language, Colombia, South America},
  year       = {1970},
  iso_code   = {snn},
  olac_field = {syntax; general_linguistics; morphology; typology},
  wals_code  = {sin}
}