To cite package ‘LJexm’ in publications use:

  Lijin Arakkandathil Thekkathil (2025). _LJexm: Extract, Convert, and
  Merge 'pdf' Files from 'zip' Files_. R package version 1.0.5,
  <https://github.com/decard-5673/ljexm>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {LJexm: Extract, Convert, and Merge 'pdf' Files from 'zip' Files},
    author = {{Lijin Arakkandathil Thekkathil}},
    year = {2025},
    note = {R package version 1.0.5},
    url = {https://github.com/decard-5673/ljexm},
  }