@book{Costello-1971,
  address    = {Bô Giáp-Duc},
  author     = {Costello, Nancy A.},
  publisher  = {Trung-Tâm Hoc-Liêu},
  title      = {Katu Vocabulary},
  year       = {1971},
  iso_code   = {ktv; kuf},
  olac_field = {syntax; typology; general_linguistics},
  wals_code  = {ktu}
}