To cite elrm in publications use:

  Zamar, D., McNeney, B., & Graham, J. (2007). elrm: Software
  Implementing Exact-Like Inference for Logistic Regression Models.
  Journal of Statistical Software, 21(3), 1-18.
  https://doi.org/10.18637/jss.v021.i03

A BibTeX entry for LaTeX users is

  @Article{,
    title = {elrm: Software Implementing Exact-like Inference for Logistic Regression Models},
    author = {David Zamar and Brad McNeney and Jinko Graham},
    journal = {Journal of Statistical Software},
    volume = {21},
    number = {3},
    year = {2007},
    pages = {1-18},
    url = {https://doi.org/10.18637/jss.v021.i03},
  }

We have invested a lot of time and effort in creating the elrm package,
please cite it when using it for data analysis.