APA (7th ed.) Citation

Postma, D., & Siafakas, N. (1998). Management of chronic obstructive pulmonary disease.

Chicago Style (17th ed.) Citation

Postma, D.S, and N.M Siafakas. Management of Chronic Obstructive Pulmonary Disease. Sheffild, 1998.

MLA (8th ed.) Citation

Postma, D.S, and N.M Siafakas. Management of Chronic Obstructive Pulmonary Disease. 1998.