https://digital.katalog.queersearch.org/s/katalog/item/39249, “Vollendete Vergangenheit, Band I: Tagebücher 1951-1952”, https://digital.katalog.queersearch.org/s/katalog/item/47616, QueerSearch, accessed 28. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/19836