https://digital.katalog.queersearch.org/s/katalog/item/44317 and https://digital.katalog.queersearch.org/s/katalog/item/39496, “Jugendsexualität”, https://digital.katalog.queersearch.org/s/katalog/item/48378, QueerSearch, accessed 14. März 2025, https://digital.katalog.queersearch.org/s/katalog/item/55827