@book{steiner-ga152-de,
  author = {Steiner, Rudolf},
  title = {Vorstufen zum Mysterium von Golgatha},
  series = {Rudolf Steiner Gesamtausgabe},
  number = {152},
  edition = {4},
  publisher = {Rudolf Steiner Verlag},
  address = {Basel},
  year = {2018},
  pagetotal = {186},
  isbn = {978-3-7274-6791-2},
  language = {german},
}

@book{steiner-ga152-en-rsp1966,
  author = {Steiner, Rudolf},
  title = {Occult Science and Occult Development},
  translator = {Dorothy S. Osmond},
  publisher = {Rudolf Steiner Press},
  year = {1966},
  language = {english},
  note = {GA 152; edition code RSP1966},
}

@online{anthroposophyai-ga152,
  author = {Steiner, Rudolf},
  title = {Vorstufen zum Mysterium von Golgatha (GA 152), as served by anthroposophy.ai},
  url = {https://anthroposophy.ai/contents/152/},
  urldate = {2026-11-04},
  organization = {anthroposophy.ai},
  note = {Rudolf Steiner, Vorstufen zum Mysterium von Golgatha (GA 152), as served by anthroposophy.ai, https://anthroposophy.ai/ga/152/, register entry https://anthroposophy.ai/contents/152/, status as of 2026-11-04: German served; English editions RSP1966.},
}