1. Ciccarelli, S.K. and White, J.N. (2013) Psychology: Diagnostic and Statistical Manual of Mental Disorders. 5th Edition, Pearson.
2. Cognitive impairment in Parkinson's disease
3. Swanson, C.R., Sesso, S.L. and Emborg, M.E. (2009) Can We Prevent Parkinson’s Disease? Frontiers in Bioscience, 14, 1642-1660.
4. Roiser, J.P., Nathan, P.J., Mander, A.P., Adusei, G., Zavitz, K.H. and Blackwell, A.D. (2015) Assessment of Cognitive Safety in Clinical Drug Development. https://discovery.ucl.ac.uk/1480983/
5. Gandhi, K.R. and Saadabadi, A. (2022) Levodopa (L-DOPA). StatPearls. https://www.ncbi.nlm.nih.gov/books/NBK482140/