@book{vandenbergandbusenitz2012,
  author    = {van den Berg, René and Busenitz, Robert L.},
  key       = {van den Berg and Busenitz 2012},
  publisher = {SIL e-Books (SILEB). SIL International},
  title     = {A grammar of Balantak: a language of eastern Sulawesi},
  year      = {2012}
}