@book{steiner-ga88-de,
  author = {Steiner, Rudolf},
  title = {Über die astrale Welt und das Devachan},
  series = {Rudolf Steiner Gesamtausgabe},
  number = {88},
  edition = {1},
  publisher = {Rudolf Steiner Verlag},
  address = {Basel},
  year = {1999},
  pagetotal = {264},
  isbn = {978-3-7274-0880-9},
  language = {german},
}

@online{anthroposophyai-ga88,
  author = {Steiner, Rudolf},
  title = {Über die astrale Welt und das Devachan (GA 88), as served by anthroposophy.ai},
  url = {https://anthroposophy.ai/contents/88/},
  urldate = {2026-10-21},
  organization = {anthroposophy.ai},
  note = {Rudolf Steiner, Über die astrale Welt und das Devachan (GA 88), as served by anthroposophy.ai, https://anthroposophy.ai/ga/88/, register entry https://anthroposophy.ai/contents/88/, status as of 2026-10-21: German served; English editions English.},
}