https://digital.katalog.queersearch.org/s/katalog/item/38663, “Transvestites and Transsexuals. Toward a Theory of Cross-Gender Behavior.”, https://digital.katalog.queersearch.org/s/katalog/item/47667, QueerSearch, accessed 17. Juni 2025, https://digital.katalog.queersearch.org/s/katalog/item/4803