BibTeX Reference for “Cascading Style Sheets, level 1”

@TechReport{Bos:18:CSS,
  author      = "Bert Bos and H\aa{}kon Wium Lie",
  title       = "Cascading Style Sheets, level 1",
  month       = sep,
  note        = "https://www.w3.org/TR/2018/SPSD-CSS1-20180913/",
  year        = "2018",
  bibsource   = "https://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Recommendation",
  institution = "W3C",
}