Quartey, Perez, Blemano David TA, and Odoi Patience. “Cardiovascular Effects of Listening to Fast Speech and Normal Speech”. International Journal of Current Research in Physiology and Pharmacology 4, no. 4 (October 3, 2020): 1–4. Accessed April 12, 2021. http://ijcrpp.com/index.php/ijcrpp/article/view/34.