S. P. Rahayu, “The Effectiveness of Progressive Muscle Relaxation on Reducing Joint Pain in the Elderly at Jember Nursing Home : Efektivitas Relaksasi Otot Progresif Terhadap Penurunan Skala Nyeri Sendi pada Lansia di UPT PSTW Jember”, jkki, vol. 2, no. 1, pp. 70–77, Dec. 2022.