APA Zitierstil

(2003). Methylxanthines for exacerbations of chronic obstructive pulmonary disease: Meta-analysis of randomised trials. BMJ Publishing Group Ltd.

Chicago Zitierstil

Methylxanthines for Exacerbations of Chronic Obstructive Pulmonary Disease: Meta-analysis of Randomised Trials. BMJ Publishing Group Ltd, 2003.

MLA Zitierstil

Methylxanthines for Exacerbations of Chronic Obstructive Pulmonary Disease: Meta-analysis of Randomised Trials. BMJ Publishing Group Ltd, 2003.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.