To cite package ‘exmort’ in publications use:

  Ding S (2026). _exmort: All-Cause and Excess Mortality Calculator_. R
  package version 0.1.1.9000, <https://github.com/shanlong-who/exmort>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {exmort: All-Cause and Excess Mortality Calculator},
    author = {Shanlong Ding},
    year = {2026},
    note = {R package version 0.1.1.9000},
    url = {https://github.com/shanlong-who/exmort},
  }