To cite package ‘RnavGraphImageData’ in publications use:

Waddell A, Oldford R (2018). RnavGraphImageData: Image Data Used in the Loon Package Demos. R package version 0.0.4, https://CRAN.R-project.org/package=RnavGraphImageData.

Corresponding BibTeX entry:

  @Manual{,
    title = {RnavGraphImageData: Image Data Used in the Loon Package
      Demos},
    author = {Adrian Waddell and R. Wayne Oldford},
    year = {2018},
    note = {R package version 0.0.4},
    url = {https://CRAN.R-project.org/package=RnavGraphImageData},
  }