APA (7th ed.) Citation

Halpin, D. M., Miravitlles, M., Metzdorf, N., & Celli, B. (2017). Impact and prevention of severe exacerbations of COPD: A review of the evidence. International journal of chronic obstructive pulmonary disease, 12, 2891-2908. https://doi.org/10.2147/COPD.S139470

Chicago Style (17th ed.) Citation

Halpin, David MG, Marc Miravitlles, Norbert Metzdorf, and Bartolomé Celli. "Impact and Prevention of Severe Exacerbations of COPD: A Review of the Evidence." International Journal of Chronic Obstructive Pulmonary Disease 12 (2017): 2891-2908. https://doi.org/10.2147/COPD.S139470.

MLA (9th ed.) Citation

Halpin, David MG, et al. "Impact and Prevention of Severe Exacerbations of COPD: A Review of the Evidence." International Journal of Chronic Obstructive Pulmonary Disease, vol. 12, 2017, pp. 2891-2908, https://doi.org/10.2147/COPD.S139470.