Widarti, Rini, and Rois Fatarudin. “Manfaat Ankle Strategy Exercise Terhadap Keseimbangan Statis Pada Lansia Di Posyandu Lansia Ngudi Waras Dusun Bugel Sukoharjo”. Prosiding University Research Colloquium, Feb. 2018, pp. 392-9, https://repository.urecol.org/index.php/proceeding/article/view/213.