APA (7th ed.) Citation

AS, B., MA, M., WM, V., S, G., P, B., DM, M., . . . Group, B. C. R. (2007). International variation in the prevalence of COPD (the BOLD Study): A population-based prevalence study. Lancet, 370(9589), 741. https://doi.org/10.1016/s0140-6736(07)61377-4

Chicago Style (17th ed.) Citation

AS, Buist, et al. "International Variation in the Prevalence of COPD (the BOLD Study): A Population-based Prevalence Study." Lancet 370, no. 9589 (2007): 741. https://doi.org/10.1016/s0140-6736(07)61377-4.

MLA (9th ed.) Citation

AS, Buist, et al. "International Variation in the Prevalence of COPD (the BOLD Study): A Population-based Prevalence Study." Lancet, vol. 370, no. 9589, 2007, p. 741, https://doi.org/10.1016/s0140-6736(07)61377-4.