APA (7th ed.) Citation

Erdal, M., Johannessen, A., Bakke, P., Gulsvik, A., Eagan, T. M., & Nielsen, R. (2020). Incremental costs of COPD exacerbations in GOLD stage 2+ COPD in ever-smokers of a general population. Elsevier.

Chicago Style (17th ed.) Citation

Erdal, Marta, Ane Johannessen, Per Bakke, Amund Gulsvik, Tomas Mikal Eagan, and Rune Nielsen. Incremental Costs of COPD Exacerbations in GOLD Stage 2+ COPD in Ever-smokers of a General Population. Elsevier, 2020.

MLA (8th ed.) Citation

Erdal, Marta, et al. Incremental Costs of COPD Exacerbations in GOLD Stage 2+ COPD in Ever-smokers of a General Population. Elsevier, 2020.