Cite
Challenges in defining and classifying the preterm birth syndrome.
MLA
Kramer, Michael S., et al. “Challenges in Defining and Classifying the Preterm Birth Syndrome.” American Journal of Obstetrics & Gynecology, vol. 206, no. 2, Feb. 2012, pp. 108–12. EBSCOhost, https://doi.org/10.1016/j.ajog.2011.10.864.
APA
Kramer, M. S., Papageorghiou, A., Culhane, J., Bhutta, Z., Goldenberg, R. L., Gravett, M., Iams, J. D., Conde-Agudelo, A., Waller, S., Barros, F., Knight, H., & Villar, J. (2012). Challenges in defining and classifying the preterm birth syndrome. American Journal of Obstetrics & Gynecology, 206(2), 108–112. https://doi.org/10.1016/j.ajog.2011.10.864
Chicago
Kramer, Michael S., Aris Papageorghiou, Jennifer Culhane, Zulfiqar Bhutta, Robert L. Goldenberg, Michael Gravett, Jay D. Iams, et al. 2012. “Challenges in Defining and Classifying the Preterm Birth Syndrome.” American Journal of Obstetrics & Gynecology 206 (2): 108–12. doi:10.1016/j.ajog.2011.10.864.