Iverson, Cheryl, Stacy Christiansen, Annette Flanagin, Phil B. Fontanarosa, Richard M. Glass, Brenda Gregoline, Stephen J. Lurie, Harriet S. Meyer, Margaret A. Winker, and Roxanne K. Young. "Expressing Quantities." AMA Manual of Style: A Guide for Authors and Editors. New York, NY: Oxford University Press, 20070301. AMA Manual of Style. 20090401. Date Accessed 21 May. 2013 <http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-484>.
Iverson, C., Christiansen, S., Flanagin, A., Fontanarosa, P., Glass, R., Gregoline, B., Lurie, S., Meyer, H., Winker, M., & Young, R.(20070301). Expressing Quantities. In AMA Manual of Style: A Guide for Authors and Editors. New York, NY: Oxford University Press. Retrieved 21 May. 2013, from http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-484.
Iverson, Cheryl, Stacy Christiansen, Annette Flanagin, Phil B. Fontanarosa, Richard M. Glass, Brenda Gregoline, Stephen J. Lurie, Harriet S. Meyer, Margaret A. Winker, and Roxanne K. Young. "Expressing Quantities." 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-div2-484.
Iverson C, Christiansen S, Flanagin A, et al. Expressing Quantities. 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-div2-484. Accessed May 21, 2013.