Engels, E. A., Pfeiffer, R. M., Ricker, W., Wheeler, W., Parsons, R., & Warren, J. L. (2011). Use of Surveillance, Epidemiology, and End Results-Medicare Data to Conduct Case-Control Studies of Cancer Among the US Elderly. American journal of epidemiology, 174(7), 860-870. https://doi.org/10.1093/aje/kwr146
Chicago Style (17th ed.) CitationEngels, Eric A., Ruth M. Pfeiffer, Winnie Ricker, William Wheeler, Ruth Parsons, and Joan L. Warren. "Use of Surveillance, Epidemiology, and End Results-Medicare Data to Conduct Case-Control Studies of Cancer Among the US Elderly." American Journal of Epidemiology 174, no. 7 (2011): 860-870. https://doi.org/10.1093/aje/kwr146.
MLA (9th ed.) CitationEngels, Eric A., et al. "Use of Surveillance, Epidemiology, and End Results-Medicare Data to Conduct Case-Control Studies of Cancer Among the US Elderly." American Journal of Epidemiology, vol. 174, no. 7, 2011, pp. 860-870, https://doi.org/10.1093/aje/kwr146.