@book{steiner-ga386-de,
  author = {Steiner, Rudolf},
  title = {Sämtliche Briefe. Band 6: Die letzten Jahre 28. September 1920 – 27. März 1925},
  series = {Rudolf Steiner Gesamtausgabe},
  number = {38/6},
  publisher = {Rudolf Steiner Verlag},
  address = {Basel},
  isbn = {978-3-7274-0387-3},
  language = {german},
}

@online{anthroposophyai-ga386,
  author = {Steiner, Rudolf},
  title = {Sämtliche Briefe. Band 6: Die letzten Jahre 28. September 1920 – 27. März 1925 (GA 38/6), as served by anthroposophy.ai},
  url = {https://anthroposophy.ai/contents/38-6/},
  urldate = {2026-10-20},
  organization = {anthroposophy.ai},
  note = {Rudolf Steiner, Sämtliche Briefe. Band 6: Die letzten Jahre 28. September 1920 – 27. März 1925 (GA 38/6), as served by anthroposophy.ai, https://anthroposophy.ai/ga/38-6/, register entry https://anthroposophy.ai/contents/38-6/, status as of 2026-10-20: German via earlier edition.},
}