https://digital.katalog.queersearch.org/s/katalog/item/44432, “Kindersegen, Fruchtverhütung, Fruchtabtreibung”, https://digital.katalog.queersearch.org/s/katalog/item/43154, QueerSearch, accessed 16. Juni 2025, https://digital.katalog.queersearch.org/s/katalog/item/28039