https://digital.katalog.queersearch.org/s/katalog/item/39995, “Reine Nervensache: Max Pfeffer ermittelt wieder”, https://digital.katalog.queersearch.org/s/katalog/item/48411, QueerSearch, accessed 15. März 2025, https://digital.katalog.queersearch.org/s/katalog/item/17264