@book{steiner-ga320-de,
  author = {Steiner, Rudolf},
  title = {Geisteswissenschaftliche Impulse zur Entwickelung der Physik, I},
  series = {Rudolf Steiner Gesamtausgabe},
  number = {320},
  edition = {5},
  publisher = {Rudolf Steiner Verlag},
  address = {Basel},
  year = {2020},
  pagetotal = {404},
  isbn = {978-3-7274-3201-9},
  language = {german},
}

@book{steiner-ga320-en-gsf1977,
  author = {Steiner, Rudolf},
  title = {The Light Course},
  translator = {George Adams M.A},
  year = {1977},
  language = {english},
  note = {GA 320; edition code GSF1977},
}

@online{anthroposophyai-ga320,
  author = {Steiner, Rudolf},
  title = {Geisteswissenschaftliche Impulse zur Entwickelung der Physik, I (GA 320), as served by anthroposophy.ai},
  url = {https://anthroposophy.ai/contents/320/},
  urldate = {2026-11-04},
  organization = {anthroposophy.ai},
  note = {Rudolf Steiner, Geisteswissenschaftliche Impulse zur Entwickelung der Physik, I (GA 320), as served by anthroposophy.ai, https://anthroposophy.ai/ga/320/, register entry https://anthroposophy.ai/contents/320/, status as of 2026-11-04: German served; English editions GSF1977.},
}