Flanagin, Annette. "Correspondence (Letters to the Editor)." AMA Manual of Style. 20090401. Oxford University Press. Date of access 20 Jun. 2013, <http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-216>.
Flanagin, A. (20090401). Correspondence (Letters to the Editor). AMA Manual of Style. Retrieved 20 Jun. 2013, from http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-216.
Flanagin, Annette. "Correspondence (Letters to the Editor)." AMA Manual of Style. 20 Jun. 2013. http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-216.
Flanagin A. Correspondence (letters to the editor). In: AMA Manual of Style: A Guide for Authors and Editors. New York, NY: Oxford University Press; 2007. http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-216. Accessed June 20, 2013.