https://digital.katalog.queersearch.org/s/katalog/item/41407, “Sonja: Eine Melancholie für Fortgeschrittene”, https://digital.katalog.queersearch.org/s/katalog/item/48958, QueerSearch, accessed 29. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/18941