To cite package ‘csurvey’ in publications use:

  Liao X (2025). _csurvey: Constrained Regression for Survey Data_. R
  package version 1.10, <https://CRAN.R-project.org/package=csurvey>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {csurvey: Constrained Regression for Survey Data},
    author = {Xiyue Liao},
    year = {2025},
    note = {R package version 1.10},
    url = {https://CRAN.R-project.org/package=csurvey},
  }