Sumandar. “Assesment of Grip Strength of Community Dwelling Older People in Tenayan Raya Pekanbaru Indonesia, a Urban Area”. Science Midwifery, vol. 9, no. 1, Oktober, Oct. 2020, pp. 32-36, https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/32.