Cita APA

Rudolf, M. (2007). COPD and death: What exactly is the relationship? BMJ Group.

Chicago Style Citation

Rudolf, Michael. COPD and Death: What Exactly Is the Relationship? BMJ Group, 2007.

Cita MLA

Rudolf, Michael. COPD and Death: What Exactly Is the Relationship? BMJ Group, 2007.

Atenció: Aquestes cites poden no estar 100% correctes.