Han, M. K. (2011). Update in Chronic Obstructive Pulmonary Disease in 2010. American Thoracic Society.
Dyfyniad Arddull ChicagoHan, MeiLan K. Update in Chronic Obstructive Pulmonary Disease in 2010. American Thoracic Society, 2011.
Dyfyniad MLAHan, MeiLan K. Update in Chronic Obstructive Pulmonary Disease in 2010. American Thoracic Society, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.