Global Burden of Disease Study 2013, Collaborators (2015). „Global, regional, and national incidence, prevalence, and years lived with disability for 301 acute and chronic diseases and injuries in 188 countries, 1990–2013: a systematic analysis for the Global Burden of Disease Study 2013”. The Lancet. PMID26063472. doi:10.1016/S0140-6736(15)60692-4.
Smith, J. D.; Wehmeyer, M. L. (1999). „TWENTIETH-CENTURY DEFINITIONS OF MENTAL RETARDATION”. Mental Retardation in the 21st Century(PDF). Austin, TX: Pro-ED. стр. 380—381. ISBN978-0-89079-819-5. Архивирано из оригинала(PDF) 12. 11. 2020. г. Приступљено 16. 6. 2022.CS1 одржавање: Формат датума (веза)
ncdj.org
„Disability Style Guide”(PDF). National Center on Disability and Journalism. 2015. Архивирано из оригинала(PDF) 4. 4. 2023. г. Приступљено 30. 4. 2022.CS1 одржавање: Формат датума (веза)
Global Burden of Disease Study 2013, Collaborators (2015). „Global, regional, and national incidence, prevalence, and years lived with disability for 301 acute and chronic diseases and injuries in 188 countries, 1990–2013: a systematic analysis for the Global Burden of Disease Study 2013”. The Lancet. PMID26063472. doi:10.1016/S0140-6736(15)60692-4.
Tidy, Colin (25. 1. 2013). „General Learning Disability”. Patient.info. Архивирано из оригинала 27. 6. 2015. г. „The term general learning disability is now used in the UK instead of terms such as mental handicap or mental retardation. The degree of disability can vary significantly, being classified as mild, moderate, severe or profound.”CS1 одржавање: Формат датума (веза)
Tidy, Colin (25. 1. 2013). „General Learning Disability”. Patient.info. Архивирано из оригинала 27. 6. 2015. г. „The term general learning disability is now used in the UK instead of terms such as mental handicap or mental retardation. The degree of disability can vary significantly, being classified as mild, moderate, severe or profound.”CS1 одржавање: Формат датума (веза)
Ansberry, Clare (20. 11. 2010). „Erasing a Hurtful Label From the Books”. The Wall Street Journal. Архивирано из оригинала 27. 6. 2015. г. Приступљено 4. 12. 2010. „Decades-long quest by disabilities advocates finally persuades state, federal governments to end official use of 'retarded'.”CS1 одржавање: Формат датума (веза)
Ansberry, Clare (20. 11. 2010). „Erasing a Hurtful Label From the Books”. The Wall Street Journal. Архивирано из оригинала 27. 6. 2015. г. Приступљено 4. 12. 2010. „Decades-long quest by disabilities advocates finally persuades state, federal governments to end official use of 'retarded'.”CS1 одржавање: Формат датума (веза)
„Disability Style Guide”(PDF). National Center on Disability and Journalism. 2015. Архивирано из оригинала(PDF) 4. 4. 2023. г. Приступљено 30. 4. 2022.CS1 одржавање: Формат датума (веза)
Smith, J. D.; Wehmeyer, M. L. (1999). „TWENTIETH-CENTURY DEFINITIONS OF MENTAL RETARDATION”. Mental Retardation in the 21st Century(PDF). Austin, TX: Pro-ED. стр. 380—381. ISBN978-0-89079-819-5. Архивирано из оригинала(PDF) 12. 11. 2020. г. Приступљено 16. 6. 2022.CS1 одржавање: Формат датума (веза)
Ansberry, Clare (20. 11. 2010). „Erasing a Hurtful Label From the Books”. The Wall Street Journal. Архивирано из оригинала 27. 6. 2015. г. Приступљено 4. 12. 2010. „Decades-long quest by disabilities advocates finally persuades state, federal governments to end official use of 'retarded'.”CS1 одржавање: Формат датума (веза)
Ansberry, Clare (20. 11. 2010). „Erasing a Hurtful Label From the Books”. The Wall Street Journal. Архивирано из оригинала 27. 6. 2015. г. Приступљено 4. 12. 2010. „Decades-long quest by disabilities advocates finally persuades state, federal governments to end official use of 'retarded'.”CS1 одржавање: Формат датума (веза)