Permata, A., and R. Mauliyah. “Case Studies of Physiotheraphy for Elderly People With Dementia With Brain Gym Exercise and Music Therapy to Improve Sleep Quality”. Jurnal Ilmu Kesehatan Abdurrab, Vol. 1, no. 1, June 2023, pp. 1-6, https://jurnal.univrab.ac.id/index.php/jika/article/view/3555.