Melani, Yohana, et al. “Penambahan Lower Extremity Strengthening Exercise Pada Core Stability Exercise Dalam Mengurangi Risiko Jatuh Pada Lansia”. FISIO MU: Physiotherapy Evidences, vol. 2, no. 2, June 2024, pp. 107-16, https://journals2.ums.ac.id/index.php/fisiomu/article/view/4973.