To cite qualpalr in publications use:

Johan Larsson (2016). qualpalr: Automatic Generation of Qualitative Color Palettes R package version 0.3.1 URL https://cran.r-project.org/package=qualpalr

Corresponding BibTeX entry:

  @Manual{,
    title = {{qualpalr}: Automatic Generation of Qualitative Color
      Palettes},
    author = {Johan Larsson},
    year = {2016},
    note = {R package version 0.3.1},
    url = {https://cran.r-project.org/package=qualpalr},
  }