To cite betareg in publications use:

  Cribari-Neto F, Zeileis A (2010). “Beta Regression in R.” _Journal of
  Statistical Software_, *34*(2), 1-24. doi:10.18637/jss.v034.i02
  <https://doi.org/10.18637/jss.v034.i02>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Beta Regression in {R}},
    author = {Francisco Cribari-Neto and Achim Zeileis},
    journal = {Journal of Statistical Software},
    year = {2010},
    volume = {34},
    number = {2},
    pages = {1--24},
    doi = {10.18637/jss.v034.i02},
  }

If you use betatree(), betamix(), or bias correction/reduction in
betareg(), please cite:

  Grün B, Kosmidis I, Zeileis A (2012). “Extended Beta Regression in R:
  Shaken, Stirred, Mixed, and Partitioned.” _Journal of Statistical
  Software_, *48*(11), 1-25. doi:10.18637/jss.v048.i11
  <https://doi.org/10.18637/jss.v048.i11>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Extended Beta Regression in {R}: Shaken, Stirred, Mixed, and Partitioned},
    author = {Bettina Gr\"un and Ioannis Kosmidis and Achim Zeileis},
    journal = {Journal of Statistical Software},
    year = {2012},
    volume = {48},
    number = {11},
    pages = {1--25},
    doi = {10.18637/jss.v048.i11},
  }

If you use betareg() for response variables with boundary observations
at 0 and/or 1, please cite:

  Kosmidis I, Zeileis A (2024). “Extended-Support Beta Regression for
  [0, 1] Responses.” arXiv 2409.07233, arXiv.org E-Print Archive.
  doi:10.48550/arXiv.2409.07233
  <https://doi.org/10.48550/arXiv.2409.07233>.

A BibTeX entry for LaTeX users is

  @TechReport{,
    title = {Extended-Support Beta Regression for [0, 1] Responses},
    author = {Ioannis Kosmidis and Achim Zeileis},
    year = {2024},
    institution = {arXiv.org E-Print Archive},
    type = {arXiv},
    number = {2409.07233},
    month = {Sepember},
    doi = {10.48550/arXiv.2409.07233},
  }