To cite package ‘pikchr’ in publications use:

  Leite A, Vasconcelos H, Bezerra D, Wasiliew M, Amorim C, Nascimento
  Barreto J (2026). _pikchr: R Wrapper for 'pikchr' (PIC) Diagram
  Language_. R package version 1.1.2,
  <https://CRAN.R-project.org/package=pikchr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {pikchr: R Wrapper for 'pikchr' (PIC) Diagram Language},
    author = {André Leite and Hugo Vasconcelos and Diogo Bezerra and Marcos Wasiliew and Carlos Amorim and Júlia {Nascimento Barreto}},
    year = {2026},
    note = {R package version 1.1.2},
    url = {https://CRAN.R-project.org/package=pikchr},
  }