@book{Jones-1970,
  address    = {Oxford},
  author     = {Jones, J. Morris},
  publisher  = {Clarendon Press},
  title      = {A Welsh grammar: Historical and comparative},
  year       = {1970},
  iso_code   = {cym},
  olac_field = {general_linguistics; typology; syntax},
  wals_code  = {wel}
}