Lüdecke D (2014). sjPlot: Data Visualization for Statistics in Social Science. R package version 1.5, http://CRAN.R-project.org/package=sjPlot.

Corresponding BibTeX entry:

  @Manual{,
    title = {sjPlot: Data Visualization for Statistics in Social
      Science},
    author = {Daniel Lüdecke},
    year = {2014},
    note = {R package version 1.5},
    url = {http://CRAN.R-project.org/package=sjPlot},
  }