1. https://www.who.int/news‐room/fact‐sheets/detail/autism‐spectrum‐disorders accessed August 2020
2. Global Prevalence of Autism and Other Pervasive Developmental Disorders
3. https://www.autismspectrum.org.au/news/autism‐prevalence‐rate‐up‐by‐an‐estimated‐40‐to‐1‐in‐70‐people‐11‐07‐2018 accessed August 2020
4. https://www.autismspeaks.org/autism‐statistics accessed August 2020