@book{steiner-ga233a-de,
  author = {Steiner, Rudolf},
  title = {Mysterienstätten des Mittelalters},
  series = {Rudolf Steiner Gesamtausgabe},
  number = {233a},
  edition = {7},
  publisher = {Rudolf Steiner Verlag},
  address = {Basel},
  year = {2025},
  pagetotal = {194},
  isbn = {978-3-7274-2336-9},
  language = {german},
}

@book{steiner-ga233a-en-ap1947,
  author = {Steiner, Rudolf},
  title = {Easter as a Chapter in the Mystery Wisdom of Man},
  translator = {S. P. Lockwood},
  publisher = {Anthroposophic Press},
  year = {1947},
  language = {english},
  note = {GA 233a; edition code AP1947},
}

@online{anthroposophyai-ga233a,
  author = {Steiner, Rudolf},
  title = {Mysterienstätten des Mittelalters (GA 233a), as served by anthroposophy.ai},
  url = {https://anthroposophy.ai/contents/233a/},
  urldate = {2026-10-21},
  organization = {anthroposophy.ai},
  note = {Rudolf Steiner, Mysterienstätten des Mittelalters (GA 233a), as served by anthroposophy.ai, https://anthroposophy.ai/ga/233a/, register entry https://anthroposophy.ai/contents/233a/, status as of 2026-10-21: German served; English editions AP1947.},
}