https://digital.katalog.queersearch.org/s/katalog/item/42531 and https://digital.katalog.queersearch.org/s/katalog/item/42532, “Stadt-Buch-Verlag Wolfgang Giesche, München 1987 – München”, 1987, QueerSearch, accessed 14. März 2025, https://digital.katalog.queersearch.org/s/katalog/item/20885