To cite palmerpenguins in publications use:

Horst AM, Hill AP, Gorman KB (2020). palmerpenguins: Palmer Archipelago (Antarctica) penguin data. doi:10.5281/zenodo.3960218, R package version 0.1.0, https://allisonhorst.github.io/palmerpenguins/.

Corresponding BibTeX entry:

  @Manual{,
    title = {palmerpenguins: Palmer Archipelago (Antarctica) penguin
      data},
    author = {Allison Marie Horst and Alison Presmanes Hill and Kristen
      B Gorman},
    year = {2020},
    note = {R package version 0.1.0},
    doi = {10.5281/zenodo.3960218},
    url = {https://allisonhorst.github.io/palmerpenguins/},
  }