1. http://www.izmirmsdernegi.org/ms-gorulen-psikolojik-ve-bilissel-sorunlar (son erişim tarihi:28.09.2018).
2. https://www.mssociety.org.uk/about-ms/signs-and-symptoms/memory-and-thinking/tips-for-dealing-with-memory-and-thinking-problems (son erişim tarihi:28.09.2018).