Retrieved October 5, 2007 from http://wdr.doleta.gov/directives/corr_doc.cfm?DOCN=2329. United States Government Accountability Office (GAO).
Tiré le 5 octobre 2007 de http://wdr.doleta.gov/directives/corr_doc.cfm?DOCN=2329. United States Government Accountability Office (GAO).