Maddieson 2013a

Ian Maddieson. 2013. Front Rounded Vowels. In Matthew S. Dryer and Martin Haspelmath (ed.), WALS Online (v2020.3) [Data set], https://wals.info/chapter/11. https://doi.org/10.5281/zenodo.7385533: Zenodo.

@incollection{
  address     = {https://doi.org/10.5281/zenodo.7385533},
  author      = {Ian Maddieson},
  booktitle   = {WALS Online (v2020.3) [Data set]},
  editor      = {Matthew S. Dryer and Martin Haspelmath},
  pages       = {https://wals.info/chapter/11},
  publisher   = {Zenodo},
  title       = {Front Rounded Vowels},
  year        = {2013}
}