@book{steiner-ga33-de,
  author = {Steiner, Rudolf},
  title = {Biographien und biographische Skizzen 1894 – 1905},
  series = {Rudolf Steiner Gesamtausgabe},
  number = {33},
  edition = {2},
  publisher = {Rudolf Steiner Verlag},
  address = {Basel},
  year = {1992},
  pagetotal = {426},
  isbn = {978-3-7274-0330-9},
  language = {german},
}

@online{anthroposophyai-ga33,
  author = {Steiner, Rudolf},
  title = {Biographien und biographische Skizzen 1894 – 1905 (GA 33), as served by anthroposophy.ai},
  url = {https://anthroposophy.ai/contents/33/},
  urldate = {2026-10-21},
  organization = {anthroposophy.ai},
  note = {Rudolf Steiner, Biographien und biographische Skizzen 1894 – 1905 (GA 33), as served by anthroposophy.ai, https://anthroposophy.ai/ga/33/, register entry https://anthroposophy.ai/contents/33/, status as of 2026-10-21: German served; English editions English.},
}