year <- sub("-.*", "", meta$Date)
vers <- paste("R package version", meta$Version)

citHeader("To cite the ridge package, use:")

bibentry(bibtype = "Manual",
  title = "ridge: Ridge Regression with Automatic Selection of the Penalty Parameter",
  author = personList(as.person("Erika Cule"), as.person("Steffen Moritz"), as.person("Dan Frankowski")),
  year = year,
  note = vers,
  url = "https://CRAN.R-project.org/package=ridge")