MUZAKI, A. Efektivitas Progressive Muscle Relaxation terhadap Peningkatan Kualitas Tidur pada Lansia dengan Sindrom Insomnia. JIKES : Jurnal Ilmu Kesehatan, [S. l.], v. 4, n. 2, p. 588–594, 2026. DOI: 10.71456/jik.v4i2.2162. Disponível em: https://yptb.org/index.php/jik/article/view/2162. Acesso em: 7 oct. 2026.