APA
Verma A. K., . (2019). Chronic Obstructive Pulmonary Disease (Pb 2019). : Cbs Publishers & Distributors (P) Ltd.
Chicago
Verma A K, . 2019. Chronic Obstructive Pulmonary Disease (Pb 2019). : Cbs Publishers & Distributors (P) Ltd.
Harvard
Verma A. K., . (2019). Chronic Obstructive Pulmonary Disease (Pb 2019). : Cbs Publishers & Distributors (P) Ltd.
MLA
Verma A K, . Chronic Obstructive Pulmonary Disease (Pb 2019). : Cbs Publishers & Distributors (P) Ltd. 2019.