https://digital.katalog.queersearch.org/s/katalog/item/40404, “Eine "eigene" Bibliothek: [Einführung]”, https://digital.katalog.queersearch.org/s/katalog/item/48435, QueerSearch, accessed 28. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/55306