Yolanda, Yori, Irfan Said, Tati Suryati, and Ria Simanungkalit. 2022. “ The Effects of Progressive Muscle Relaxation on the Level of Anxiety in Nurses Caring for Patients With Covid-19”. Indonesian Contemporary Nursing Journal (ICON Journal) 7 (1):16-24. https://doi.org/10.20956/icon.v7i1.18789.