Zhuang, Z., Bradtmiller, B., & Shaffer, R. E. (2007). New Respirator Fit Test Panels Representing the Current U.S. Civilian Work Force. Journal of occupational and environmental hygiene, 4(9), 647-659. https://doi.org/10.1080/15459620701497538
Chicago Style (17th ed.) CitationZhuang, Ziqing, Bruce Bradtmiller, and Ronald E. Shaffer. "New Respirator Fit Test Panels Representing the Current U.S. Civilian Work Force." Journal of Occupational and Environmental Hygiene 4, no. 9 (2007): 647-659. https://doi.org/10.1080/15459620701497538.
MLA (9th ed.) CitationZhuang, Ziqing, et al. "New Respirator Fit Test Panels Representing the Current U.S. Civilian Work Force." Journal of Occupational and Environmental Hygiene, vol. 4, no. 9, 2007, pp. 647-659, https://doi.org/10.1080/15459620701497538.