@book{steiner-ga218-de,
  author = {Steiner, Rudolf},
  title = {Geistige Zusammenhänge in der Gestaltung des menschlichen Organismus},
  series = {Rudolf Steiner Gesamtausgabe},
  number = {218},
  edition = {6},
  publisher = {Rudolf Steiner Verlag},
  address = {Basel},
  year = {2017},
  pagetotal = {362},
  isbn = {978-3-7274-2182-2},
  language = {german},
}

@book{steiner-ga218-en-apl1949,
  author = {Steiner, Rudolf},
  title = {First Steps in Supersensible Perception and The Relation of Anthroposophy to Christianity},
  translator = {D. S. Osmond},
  year = {1949},
  language = {english},
  note = {GA 218; edition code APL1949},
}

@online{anthroposophyai-ga218,
  author = {Steiner, Rudolf},
  title = {Geistige Zusammenhänge in der Gestaltung des menschlichen Organismus (GA 218), as served by anthroposophy.ai},
  url = {https://anthroposophy.ai/contents/218/},
  urldate = {2026-10-21},
  organization = {anthroposophy.ai},
  note = {Rudolf Steiner, Geistige Zusammenhänge in der Gestaltung des menschlichen Organismus (GA 218), as served by anthroposophy.ai, https://anthroposophy.ai/ga/218/, register entry https://anthroposophy.ai/contents/218/, status as of 2026-10-21: German served; English editions APL1949.},
}