https://digital.katalog.queersearch.org/s/katalog/item/40105 and https://digital.katalog.queersearch.org/s/katalog/item/40109, “Sexual Orientation in the Workplace: Gay Men, Lesbians, Bisexuals, and Heterosexuals Working Together”, https://digital.katalog.queersearch.org/s/katalog/item/48450, QueerSearch, accessed 16. Juni 2025, https://digital.katalog.queersearch.org/s/katalog/item/16167