To cite portalR in publications, use:

Christensen EM, Yenni GM, Ye H, Simonis JL, Bledsoe EK, Diaz RM, Taylor SD, White EP, Ernest SKM (2019). “portalr: an R package for summarizing and using the Portal Project Data.” Journal of Open Source Software, 4(33), 1098. doi: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},
  }