To cite package ‘pikchr’ in publications use:

  Leite A, Vaconcelos H (2024). _pikchr: R Wrapper for 'pikchr' (PIC)
  Diagram Language_. R package version 1.0,
  <https://github.com/strategicprojects/pikchr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {pikchr: R Wrapper for 'pikchr' (PIC) Diagram Language},
    author = {Andre Leite and Hugo Vaconcelos},
    year = {2024},
    note = {R package version 1.0},
    url = {https://github.com/strategicprojects/pikchr},
  }