SIREGAR, R. Pengaruh Terapi Relaksasi Otot Progressive Terhadap Kualitas Tidur Lansia di UPT Pelayanan Sosial Lanjut Usia Binjai tahun 2017. JURNAL MUTIARA NERS, [S. l.], v. 1, n. 2, p. 109–113, 2018. Disponível em: http://601341.annawisefintch.tech/index.php/NERS/article/view/359. Acesso em: 1 dec. 2024.