To cite package ‘truncreg’ in publications use:

Croissant Y, Zeileis A (2018). truncreg: Truncated Gaussian Regression Models. R package version 0.2-5, https://r-forge.r-project.org/projects/truncreg.

Corresponding BibTeX entry:

  @Manual{,
    title = {truncreg: Truncated Gaussian Regression Models},
    author = {Yves Croissant and Achim Zeileis},
    year = {2018},
    note = {R package version 0.2-5},
    url = {https://r-forge.r-project.org/projects/truncreg},
  }