@book{steiner-ga147-de,
  author = {Steiner, Rudolf},
  title = {Die Geheimnisse der Schwelle},
  series = {Rudolf Steiner Gesamtausgabe},
  number = {147},
  edition = {7},
  publisher = {Rudolf Steiner Verlag},
  address = {Basel},
  year = {2015},
  pagetotal = {178},
  isbn = {978-3-7274-1471-8},
  language = {german},
}

@book{steiner-ga147-en-ap1987,
  author = {Steiner, Rudolf},
  title = {Secrets of the Threshold},
  translator = {Ruth Pusch},
  publisher = {Anthroposophic Press},
  year = {1987},
  language = {english},
  note = {GA 147; edition code AP1987},
}

@online{anthroposophyai-ga147,
  author = {Steiner, Rudolf},
  title = {Die Geheimnisse der Schwelle (GA 147), as served by anthroposophy.ai},
  url = {https://anthroposophy.ai/contents/147/},
  urldate = {2026-10-21},
  organization = {anthroposophy.ai},
  note = {Rudolf Steiner, Die Geheimnisse der Schwelle (GA 147), as served by anthroposophy.ai, https://anthroposophy.ai/ga/147/, register entry https://anthroposophy.ai/contents/147/, status as of 2026-10-21: German served; English editions AP1987.},
}