To cite package ‘granular’ in publications use:

  Whan A, Tanaka E (2020). _granular: Resolving starch granule
  distributions_. R package version 0.4.2,
  <https://github.com/csiro-crop-informatics/granular>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {granular: Resolving starch granule distributions},
    author = {Alex Whan and Emi Tanaka},
    year = {2020},
    note = {R package version 0.4.2},
    url = {https://github.com/csiro-crop-informatics/granular},
  }