Anita Sharma ; with a contribution by David Pitchforth ; forewords by Gail Richards; Barclay, Joyce. COPD in primary care. Oxford: Radcliffe Pub. 2010: 9 [2015-03-27]. ISBN 978-1-84619-316-3. (原始内容存档于2014-09-29).
Vestbo, Jørgen. Diagnosis and Assessment(PDF). Global Strategy for the Diagnosis, Management, and Prevention of Chronic Obstructive Pulmonary Disease. Global Initiative for Chronic Obstructive Lung Disease. 2013: 9–17. (原始内容(PDF)存档于2013-10-04).
Cor pulmonale. Professional guide to diseases 9th. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. 2009: 120–2 [2015-03-27]. ISBN 978-0-7817-7899-2. (原始内容存档于2014-10-06).
Vestbo, Jørgen. Diagnosis and Assessment(PDF). Global Strategy for the Diagnosis, Management, and Prevention of Chronic Obstructive Pulmonary Disease. Global Initiative for Chronic Obstructive Lung Disease. 2013: 9–17. (原始内容(PDF)存档于2013-10-04).
Cor pulmonale. Professional guide to diseases 9th. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. 2009: 120–2 [2015-03-27]. ISBN 978-0-7817-7899-2. (原始内容存档于2014-10-06).
Anita Sharma ; with a contribution by David Pitchforth ; forewords by Gail Richards; Barclay, Joyce. COPD in primary care. Oxford: Radcliffe Pub. 2010: 9 [2015-03-27]. ISBN 978-1-84619-316-3. (原始内容存档于2014-09-29).