Lumban Tobing, M. U. (2019). The Effect Of Giving Exercise Of Passive Range Of Motion (ROM) To The Flexibility Of Knee Joint In Elderly: Subtitle : There is the Effect Of Giving Exercise Of Passive Range Of Motion (ROM) To The Flexibility Of Knee Joint In Elderly. Jurnal Kesehatan Ilmiah Indonesia / Indonesian Health Scientific Journal, 4(2), 41–47. Retrieved from https://jurnal.unar.ac.id/index.php/health/article/view/61