@book{steiner-ga324a-de,
  author = {Steiner, Rudolf},
  title = {Die vierte Dimension},
  series = {Rudolf Steiner Gesamtausgabe},
  number = {324a},
  edition = {2},
  publisher = {Rudolf Steiner Verlag},
  address = {Basel},
  year = {2025},
  pagetotal = {354},
  isbn = {978-3-7274-3245-3},
  language = {german},
}

@book{steiner-ga324a-en-sol2024,
  author = {Steiner, Rudolf},
  title = {The Fourth Dimension},
  publisher = {Steiner Online Library},
  year = {2024},
  language = {english},
  note = {GA 324a; edition code SOL2024},
}

@online{anthroposophyai-ga324a,
  author = {Steiner, Rudolf},
  title = {Die vierte Dimension (GA 324a), as served by anthroposophy.ai},
  url = {https://anthroposophy.ai/contents/324a/},
  urldate = {2026-11-05},
  organization = {anthroposophy.ai},
  note = {Rudolf Steiner, Die vierte Dimension (GA 324a), as served by anthroposophy.ai, https://anthroposophy.ai/ga/324a/, register entry https://anthroposophy.ai/contents/324a/, status as of 2026-11-05: German served; English editions SOL2024.},
}