APA (7th ed.) Citation

ML, P., MA, L., BL, A., SA, G., B, G., & J, S. (2009). Obstetrician-gynecologists' practices and perceived knowledge regarding immunization. American Journal of Preventive Medicine, 37(3), 231. https://doi.org/10.1016/j.amepre.2009.05.019

Chicago Style (17th ed.) Citation

ML, Power, Leddy MA, Anderson BL, Gall SA, Gonik B, and Schulkin J. "Obstetrician-gynecologists' Practices and Perceived Knowledge Regarding Immunization." American Journal of Preventive Medicine 37, no. 3 (2009): 231. https://doi.org/10.1016/j.amepre.2009.05.019.

MLA (9th ed.) Citation

ML, Power, et al. "Obstetrician-gynecologists' Practices and Perceived Knowledge Regarding Immunization." American Journal of Preventive Medicine, vol. 37, no. 3, 2009, p. 231, https://doi.org/10.1016/j.amepre.2009.05.019.