https://digital.katalog.queersearch.org/s/katalog/item/43733, “Schorer en het Nederlandsch Wetenschappelijk Humanitair Komitee (1911-1940)”, https://digital.katalog.queersearch.org/s/katalog/item/50364, QueerSearch, accessed 17. Mai 2025, https://digital.katalog.queersearch.org/s/katalog/item/55579