Melenina, F., Ismainar, H., Hayana, H., Rasyid, Z. and Sando, W. 2022. Determinants of the Application of Handwashing with Soap in the Elderly in Preventing Covid-19 at UPT PSTW Khusnul Khotimah Riau Province Social Service in 2022: Determinan Penerapan Cuci Tangan Pakai Sabun Pada Lansia Dalam Pencegahan Covid-19 Di UPT PSTW Khusnul Khotimah Dinas Sosial Provinsi Riau Tahun 2022. Jurnal Olahraga dan Kesehatan (ORKES). 1, 2 (Aug. 2022), 219–228. DOI:https://doi.org/10.56466/orkes/Vol1.Iss2.20.