To cite glca in publications use:

Kim Y, Chung H (2021). glca: An R Package for Multiple-Group Latent Class Analysis. R~package version~1.3.3, https://kim0sun.github.io/glca/.

Corresponding BibTeX entry:

  @Manual{,
    title = {{glca}: An {R} Package for Multiple-Group Latent Class
      Analysis},
    author = {Youngsun Kim and Hwan Chung},
    year = {2021},
    note = {{R}~package version~1.3.3},
    url = {https://kim0sun.github.io/glca/},
  }