@incollection{adelaar1981,
  address   = {Auckland},
  author    = {Adelaar, K. Alexander},
  booktitle = {Studies in Pacific languages and cultures in honour of Bruce Biggs},
  editor    = {Blust, Robert},
  key       = {Adelaar 1981},
  publisher = {Linguistic Society of New Zealand},
  title     = {Reconstruction of Proto-Batak phonology},
  year      = {1981}
}