@unpublished{685557,
  author         = {Rumsey, Alan},
  number         = {1},
  title          = {The acquisition of 'optional ergative' marking in the Ku Waru language of Highland Papua New Guinea},
  volume         = {X},
  year           = {1966},
  citekeys       = {cldf3:13871},
  inlg           = {English [eng]},
  isreferencedby = {cldf3},
  lgcode         = {[nort2921]},
  macro_area     = {Papunesia},
  src            = {cldf}
}