https://digital.katalog.queersearch.org/s/katalog/item/65133, “[Rezension zu:] Magnus Hirschfelds Exil-Gästebuch”, https://digital.katalog.queersearch.org/s/katalog/item/42171, QueerSearch, accessed 14. März 2025, https://digital.katalog.queersearch.org/s/katalog/item/56330