TARIGAN, A. P. S.; JULIANDI, J. PERNAFASAN PURSED LIP BREATHING MENINGKATKAN SATURASI OKSIGEN PENDERITA PENYAKIT PARU OBSTRUKTIF KRONIS (PPOK) DERAJAT II. JURNAL ONLINE KEPERAWATAN INDONESIA, [S. l.], v. 1, n. 2, p. 39–46, 2019. Disponível em: https://e-journal.sari-mutiara.ac.id/index.php/Keperawatan/article/view/426. Acesso em: 4 dec. 2024.