WITRIYANI. Effectiveness of Progressive Muscle Relaxation in Reducing Insomnia Severity Among Older Adults: Implementasi Relaksasi Otot Progresif Terhadap Penurunan Skala Insomnia Pada Lansia. Informasi dan Promosi Kesehatan , [S. l.], v. 4, n. 1, p. 35–46, 2025. DOI: 10.58439/ipk.v4i1.368. Disponível em: https://e-journal.saku.co.id/index.php/IPK/article/view/368. Acesso em: 28 feb. 2026.