citHeader("The United States Geological Survey provides guidelines for\n",
          "citing USGS data products (as downloaded from 'get_tiles') at:\n",
          "https://www.usgs.gov/faqs/how-should-i-cite-datasets-and-services-national-map \n",
          "\n",
          "To cite terrainr in publications please use:")

year <- sub("-.*", "", meta$Date)
note <- sprintf("R package version %s", meta$Version)

bibentry(bibtype = "Manual",
         title = "{terrainr}: Landscape Visualizations in R and Unity",
         author = person("Michael", "Mahoney"),
         year = year,
         note = note,
         doi = "https://doi.org/10.5281/zenodo.5142763",
         url = "https://CRAN.R-project.org/package=terrainr")

 textVersion = paste0("Michael J Mahoney, (", year, ").",
  " terrainr: Landscape Visualizations in R and Unity. ",
  note, ".",
  " https://CRAN.R-project.org/package=terrainr")
