APA (7th ed.) Citation

Wilson Kerry S, Spies Adri, & Ferrie Robert. (2011). Respirator fit of a medium mask on a group of South Africans: A cross-sectional study. BMC.

Chicago Style (17th ed.) Citation

Wilson Kerry S, Spies Adri, and Ferrie Robert. Respirator Fit of a Medium Mask on a Group of South Africans: A Cross-sectional Study. BMC, 2011.

MLA (9th ed.) Citation

Wilson Kerry S, et al. Respirator Fit of a Medium Mask on a Group of South Africans: A Cross-sectional Study. BMC, 2011.