@book{johanson_2021,
  place={Cambridge},
  series={Cambridge Language Surveys},
  title={{Turkic}}, DOI={10.1017/9781139016704},
  publisher={Cambridge University Press},
  author={Johanson, Lars},
  year={2021},
  collection={Cambridge Language Surveys}
}

@book{robbeets_savelyev_2021,
  place={Oxford},
  title={{The} {Oxford} {Guide} to the {Transeurasian} {Languages}}, DOI={10.1093/oso/9780198804628.001.0001},
  publisher={Oxford University Press},
  author={Robbeets, Martine and Savelyev, Alexander},
  year={2020},
}