@book{Tiersma-1985,
  address    = {Dordrecht},
  author     = {Tiersma, P. M.},
  publisher  = {Foris Publications},
  title      = {Frisian Reference Grammar},
  year       = {1985},
  iso_code   = {frs; fry},
  olac_field = {syntax; semantics; typology; general_linguistics},
  wals_code  = {fri; frw}
}