Hammarström et al. 2020

Hammarström, Harald and Forkel, Robert and Haspelmath, Martin and Bank, Sebastian. 2020. Glottolog 4.2.1. \textsc{url:} \url{http://glottolog.org} (accessed 2020-05-18).

@misc{glottolog,
  address      = {Jena},
  author       = {Hammarström, Harald and Forkel, Robert and Haspelmath, Martin and Bank, Sebastian},
  howpublished = {\textsc{url:} \url{http://glottolog.org} (accessed 2020-05-18)},
  title        = {Glottolog 4.2.1},
  year         = {2020}
}