1. World Report on Hearing: Executive Summary. World Health Organization, Geneva (2021). Licence: CC BY-NC-SA 3.0 IGO
2. Musau, R.M.: The three major barriers deaf people face in the community, 8 June 2021. https://www.ndcs.org.uk/deaf-child-worldwide/our-blog/the-three-major-barriers-deaf-people-face-in-the-community/#:~:text=Lack%20of%20access%20to%20language%20and%2For%20assistive%20devices.&text=Deaf%20children%20are%20often%20delayed,technology%20such%20as%20hearing%20aids
3. Department of Health & Human Services: Hearing loss - lipreading. Better Health Channel, 15 Mar 2000. https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/hearing-loss-lipreading
4. National Academies Press (US): Impact of hearing loss on daily life and the workplace. Hearing Loss - NCBI Bookshelf (2004). https://www.ncbi.nlm.nih.gov/books/NBK207836/
5. Different ways of communicating | Deaf children and young people (n.d.). https://www.ndcs.org.uk/information-and-support/professionals/activities/resources/communication/