United States. Office of the Federal Register.. Federal Register, Volume 75, Number 219, November 15, 2010, Pages 69571-69850. Washington D.C.. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc52800/. Accessed May 21, 2013.
United States. Office of the Federal Register.. Federal Register, Volume 75, Number 219, November 15, 2010, Pages 69571-69850. Washington D.C.. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc52800/. Accessed May 21, 2013.