To cite package ‘r4pde’ in publications use:

  Del Ponte E (2026). _r4pde: Companion to R for Plant Disease
  Epidemiology Book_. R package version 0.1.0,
  <https://github.com/emdelponte/r4pde>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {r4pde: Companion to R for Plant Disease Epidemiology Book},
    author = {Emerson {Del Ponte}},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/emdelponte/r4pde},
  }