https://digital.katalog.queersearch.org/s/katalog/item/41994, “A Minority: A report on the Life of the Male Homosexual in Great Britain. With a Foreword by Sir John Wolfenden”, https://digital.katalog.queersearch.org/s/katalog/item/49327, QueerSearch, accessed 1. Mai 2025, https://digital.katalog.queersearch.org/s/katalog/item/27100