Reference: Campbell 2012

Campbell, Lyle. 2012. Classification of the indigenous languages of South America. The indigenous languages of South America: A comprehensive guide 2. 59–166. De Gruyter Mouton.

@article{campbell2012classification,
  author    = {Campbell, Lyle},
  journal   = {The indigenous languages of South America: A comprehensive guide},
  pages     = {59–166},
  publisher = {De Gruyter Mouton},
  title     = {Classification of the indigenous languages of South America},
  volume    = {2},
  year      = {2012}
}