., I., R. M. ., F. Theresia, S. Miftahul Khoeriyah, and N. Satria. “The Effect of Progressive Muscle Relaxation Therapy on Elderly’s Sleep Quality at PSTW Budi Luhur, Kasongan, Bantul”. KnE Social Sciences, Vol. 8, no. 9, May 2023, pp. 549–554, doi:10.18502/kss.v8i9.13369.