Hidayat, Syaifurrahman, et al. “The Combination Therapy of Self-Surrender Exercise and Distraction Against Osteoarthritis Pain Scale of Elderly In Coastal Area”. STRADA : Jurnal Ilmiah Kesehatan, vol. 9, no. 2, Nov. 2020, pp. 1212-2, doi:10.30994/sjik.v9i2.425.