APA (7th ed.) Citation

Knaggs, R., Sonnex, K., & Alleemudder, H. Impact of smoking status on the efficacy of inhaled corticosteroids in chronic obstructive pulmonary disease: A systematic review. BMJ Publishing Group.

Chicago Style (17th ed.) Citation

Knaggs, Roger, Kimberley Sonnex, and Hanna Alleemudder. Impact of Smoking Status on the Efficacy of Inhaled Corticosteroids in Chronic Obstructive Pulmonary Disease: A Systematic Review. BMJ Publishing Group.

MLA (9th ed.) Citation

Knaggs, Roger, et al. Impact of Smoking Status on the Efficacy of Inhaled Corticosteroids in Chronic Obstructive Pulmonary Disease: A Systematic Review. BMJ Publishing Group.

Warning: These citations may not always be 100% accurate.