Christiansen, Stacy. "Modifiers (Noun Strings)." AMA Manual of Style. 20090401. Oxford University Press. Date of access 19 May. 2013, <http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-257>.
Christiansen, S. (20090401). Modifiers (Noun Strings). AMA Manual of Style. Retrieved 19 May. 2013, from http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-257.
Christiansen, Stacy. "Modifiers (Noun Strings)." AMA Manual of Style. 19 May. 2013. http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-257.
Christiansen S. Modifiers (noun strings). In: AMA Manual of Style Committee. AMA Manual of Style: A Guide for Authors and Editors. 10th edition ed. New York, NY: Oxford University Press; 2007:316. http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-257. Accessed May 19, 2013.