To cite package ‘SMMAL’ in publications use:

  Hou J, Zhang Y, Kong S (2025). _SMMAL: Semi-Supervised Estimation of
  Average Treatment Effects_. R package version 0.0.5,
  <https://CRAN.R-project.org/package=SMMAL>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {SMMAL: Semi-Supervised Estimation of Average Treatment Effects},
    author = {Jue Hou and Yuming Zhang and Shuheng Kong},
    year = {2025},
    note = {R package version 0.0.5},
    url = {https://CRAN.R-project.org/package=SMMAL},
  }