1. Declaration on the Rights of Disabled Persons of 1975 (1975)
2. Hoffman, B.: Rehabilitation of the deaf. In: Introduction to Teaching Processes, p. 27. PWN (1979) (in Polish)
3. Grzegorzewska, M.: Special Education, p. 30. PIPS (1964) (in Polish)
4. Bowe, F.G., McMahon, B.T., Chang, T., Louvi, I.: Workplace discrimination, deafness and hearing impairment: the national EEOC ADA research project. Work 25, 19–25 (2015)
5. Starzyńska, B., Kujawińska, A., Grabowska, M., Diakun, J., Więcek-Janka, E., Schnieder, L., Schlueter, N., Nicklas, J.-P.: Requirements elicitation of passengers with reduced mobility for the design of high quality, accessible and inclusive public transport services. Manage. Prod. Eng. Rev. 6(3), 70–76 (2015)