Sulistiyaningsih, R., A. S. Rasyid, D. N. Amalia, F. F. Harna, and A. S. Mubarok. “The Anxiety Dynamics Amongst the Elderly During the Covid-19 Pandemic”. KnE Social Sciences, Vol. 4, no. 15, Jan. 2021, pp. 326–335, doi:10.18502/kss.v4i15.8221.