Gaya APA

Voelkel, N, F., Macnee, W. (2008). Chronic Obstructive Lung Diseases 2 . : BC Decker Inc.

Gaya MLA

Voelkel, Norbert, F.., Macnee, William. "Chronic Obstructive Lung Diseases 2". : BC Decker Inc, 2008. Text.