Cita APA

Donaldson, G. C., & Wedzicha, J. A. (2006). COPD exacerbations · 1: Epidemiology. BMJ Group.

Chicago Style Citation

Donaldson, G C., i J A. Wedzicha. COPD Exacerbations · 1: Epidemiology. BMJ Group, 2006.

Cita MLA

Donaldson, G C., i J A. Wedzicha. COPD Exacerbations · 1: Epidemiology. BMJ Group, 2006.