To cite portalR in publications, use:

Erica M. Christensen, Glenda M. Yenni, Hao Ye, Juniper L. Simonis, Ellen K. Bledsoe, Renata M. Diaz, Shawn D. Taylor, Ethan P. White, and S. K. Morgan Ernest. (2019). portalr: an R package for summarizing and using the Portal Project Data. Journal of Open Source Software, 4(33), 1098, https://doi.org/10.21105/joss.01098

Corresponding BibTeX entry:

  @Article{christensen2019portalr,
    title = {portalr: an R package for summarizing and using the Portal
      Project Data},
    author = {Erica M. Christensen and Glenda M. Yenni and Hao Ye and
      Juniper L. Simonis and Ellen K. Bledsoe and Renata M. Diaz and
      Shawn D. Taylor and Ethan P. White and S. K. Morgan Ernest},
    year = {2019},
    journal = {Journal of Open Source Software},
    volume = {4},
    number = {33},
    pages = {1098},
    doi = {10.21105/joss.01098},
  }