https://digital.katalog.queersearch.org/s/katalog/item/39463, “Bi-Sexual Love: Auhorized Translation by James S. van Teslaar”, https://digital.katalog.queersearch.org/s/katalog/item/49925, QueerSearch, accessed 17. März 2025, https://digital.katalog.queersearch.org/s/katalog/item/26692