Xia, X., Qiu, H., Kwok, T., Ko, F. W., Man, C. L., & Ho, K. (2020). Time course of blood oxygen saturation responding to short-term fine particulate matter among elderly healthy subjects and patients with chronic obstructive pulmonary disease. The Science of the total environment, 723, 138022. https://doi.org/10.1016/j.scitotenv.2020.138022
Chicago Style (17th ed.) CitationXia, Xi, Hong Qiu, Timothy Kwok, Fanny W.S Ko, Chung Ling Man, and Kin-Fai Ho. "Time Course of Blood Oxygen Saturation Responding to Short-term Fine Particulate Matter Among Elderly Healthy Subjects and Patients with Chronic Obstructive Pulmonary Disease." The Science of the Total Environment 723 (2020): 138022. https://doi.org/10.1016/j.scitotenv.2020.138022.
MLA (9th ed.) CitationXia, Xi, et al. "Time Course of Blood Oxygen Saturation Responding to Short-term Fine Particulate Matter Among Elderly Healthy Subjects and Patients with Chronic Obstructive Pulmonary Disease." The Science of the Total Environment, vol. 723, 2020, p. 138022, https://doi.org/10.1016/j.scitotenv.2020.138022.