Gregoline, Brenda. "Greek Letters." AMA Manual of Style: A Guide for Authors and Editors. New York, NY: Oxford University Press, 20070301. AMA Manual of Style. 20090401. Date Accessed 25 May. 2013 <http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-chapter-17>.
Gregoline, B.(20070301). Greek Letters. In AMA Manual of Style: A Guide for Authors and Editors. New York, NY: Oxford University Press. Retrieved 25 May. 2013, from http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-chapter-17.
Gregoline, Brenda. "Greek Letters." In AMA Manual of Style: A Guide for Authors and Editors. New York, NY: Oxford University Press, 20070301. http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-chapter-17.
Gregoline B. Greek letters. In: AMA Manual of Style Committee. AMA Manual of Style: A Guide for Authors and Editors. 10th ed. New York, NY: Oxford University Press; 2007. http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-chapter-17. Accessed May 25, 2013.