United States. Office of the Federal Register.. Federal Register, Volume 74, Number 91, May 13, 2009, Pages 22417-22636. Washington D.C.. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc132953/. Accessed May 21, 2013.
Note: Inconsistencies in capitalization and punctuation within the Digital Library may affect this citation. Before using this citation in formal writing, please consult your preferred style manual. More information.