https://digital.katalog.queersearch.org/s/katalog/item/39117, “Les Caractères Sexuels psychiques secondaires et tertiaires: Études de pychologie sexuelle XVIII”, https://digital.katalog.queersearch.org/s/katalog/item/50995, QueerSearch, accessed 3. Mai 2025, https://digital.katalog.queersearch.org/s/katalog/item/30034