van der Westhuizen, H., Kotze, K., Tonkin-Crine, S., Gobat, N., & Greenhalgh, T. (2020). Face coverings for covid-19: From medical intervention to social practice. BMJ.
Chicago-viite (17. p.)van der Westhuizen, H-M, K. Kotze, S. Tonkin-Crine, N. Gobat, ja T. Greenhalgh. Face Coverings for Covid-19: From Medical Intervention to Social Practice. BMJ, 2020.
MLA-viite (9. p.)van der Westhuizen, H-M, et al. Face Coverings for Covid-19: From Medical Intervention to Social Practice. BMJ, 2020.
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