Fontanarosa, Phil B., and Stacy Christiansen. "Laboratory Values." AMA Manual of Style. 20090401. Oxford University Press. Date of access 18 May. 2013, <http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-498>.
Fontanarosa, P., & Christiansen, S. (20090401). Laboratory Values. AMA Manual of Style. Retrieved 18 May. 2013, from http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-498.
Fontanarosa, Phil B., and Stacy Christiansen. "Laboratory Values." AMA Manual of Style. 18 May. 2013. http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-498.
Fontanarosa PB, Christiansen S. Laboratory values. 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; 2007:797-816. http://www.amamanualofstyle.com/view/10.1093/jama/9780195176339.001.0001/med-9780195176339-div2-498. Accessed May 18, 2013.