https://digital.katalog.queersearch.org/s/katalog/item/42871, “Les perversions de l'instinct génital: Étude sur l'inversion sexuelle”, https://digital.katalog.queersearch.org/s/katalog/item/49234, QueerSearch, accessed 15. Juni 2025, https://digital.katalog.queersearch.org/s/katalog/item/25060