@book{steiner-ga209-de,
  author = {Steiner, Rudolf},
  title = {Nordische und mitteleuropäische Geistimpulse},
  series = {Rudolf Steiner Gesamtausgabe},
  number = {209},
  edition = {2},
  publisher = {Rudolf Steiner Verlag},
  address = {Basel},
  year = {1982},
  pagetotal = {206},
  isbn = {978-3-7274-2090-0},
  language = {german},
}

@book{steiner-ga209-en-apc1948,
  author = {Steiner, Rudolf},
  title = {Cosmic Forces in Man},
  publisher = {Anthroposophic Press},
  year = {1948},
  language = {english},
  note = {GA 209; edition code APC1948},
}

@online{anthroposophyai-ga209,
  author = {Steiner, Rudolf},
  title = {Nordische und mitteleuropäische Geistimpulse (GA 209), as served by anthroposophy.ai},
  url = {https://anthroposophy.ai/contents/209/},
  urldate = {2026-10-21},
  organization = {anthroposophy.ai},
  note = {Rudolf Steiner, Nordische und mitteleuropäische Geistimpulse (GA 209), as served by anthroposophy.ai, https://anthroposophy.ai/ga/209/, register entry https://anthroposophy.ai/contents/209/, status as of 2026-10-21: German served; English editions APC1948.},
}