National Institute of Occupational Safety and Health, Respiratory Diseases Input: Occupational Risks, su NIOSH Program Portfolio, Centers for Disease Control and Prevention, 2012. URL consultato il 2 febbraio 2013.
RH. Albert, Diagnosis and treatment of acute bronchitis., in Am Fam Physician, vol. 82, n. 11, Dic 2010, pp. 1345-50, PMID21121518.
U.S. National Library of Medicine, Chronic obstructive pulmonary disease, su ncbi.nlm.nih.gov, A.D.A.M. Medical Encyclopedia, 2011. URL consultato il 2 febbraio 2013.
M. Szczyrek, P. Krawczyk; J. Milanowski; I. Jastrzębska; A. Zwolak; J. Daniluk, Chronic obstructive pulmonary disease in farmers and agricultural workers - an overview., in Ann Agric Environ Med, vol. 18, n. 2, Dic 2011, pp. 310-3, PMID22216804.
Willemse BW, Postma DS, Timens W, ten Hacken NH, The impact of smoking cessation on respiratory symptoms, lung function, airway hyperresponsiveness and inflammation, in The European respiratory journal: official journal of the European Society for Clinical Respiratory Physiology, vol. 23, n. 3, marzo 2004, pp. 464–476, PMID15065840.
Understanding Chronic Bronchitis, su lung.org, American Lung Association, 2012. URL consultato il 2 febbraio 2013 (archiviato dall'url originale il 18 dicembre 2012).
National Heart Lung and Blood Institute, Who Is at Risk for Bronchitis?, su nhlbi.nih.gov, National Institutes of Health, 2009. URL consultato il 2 febbraio 2013 (archiviato dall'url originale il 4 gennaio 2013).