Novie, Novie Elvinawaty Mauliku, and Desinta Estri Dianis Desintra. “Environmental Factors As The Risk Factors Of The Degrees Severity Chronic Obstructive Pulmonary Diseases on Elderly”. JURNAL KESEHATAN KARTIKA 14, no. 2 (February 13, 2021): 109–115. Accessed September 18, 2025. https://stikesjayc.id/ejournal/index.php/litkartika/article/view/97.