APA-viite (7. p.)

Y, H., W, J., S, A., SS, H., SJ, L., & WJ, K. (2016). Sex differences of COPD phenotypes in nonsmoking patients. Dove Medical Press.

Chicago-viite (17. p.)

Y, Hong, Ji W, An S, Han SS, Lee SJ, ja Kim WJ. Sex Differences of COPD Phenotypes in Nonsmoking Patients. Dove Medical Press, 2016.

MLA-viite (9. p.)

Y, Hong, et al. Sex Differences of COPD Phenotypes in Nonsmoking Patients. Dove Medical Press, 2016.