STROJEK, Katarzyna, KARPIŃSKA, Anna, KAŹMIERCZAK, Urszula, ZUKOW, Walery and RADZIMIŃSKA, Agnieszka. Rehabilitation of speech in Parkinson’s disease. Journal of Education, Health and Sport. Online. 21 December 2017. Vol. 7, no. 12, pp. 212-221. [Accessed 18 July 2024].