MLA

Copd-journal of Chronic Obstructive Pulmonary Disease. UNITED STATES: Marcel Dekker, Inc, .

APA

Copd-Journal of Chronic Obstructive Pulmonary Disease. UNITED STATES: Marcel Dekker, Inc.

Chicago

Copd-Journal of Chronic Obstructive Pulmonary Disease. UNITED STATES: Marcel Dekker, Inc.