United States. Federal Communications Commission.. FCC Record, Volume 27, No. 3, Pages 1878 to 2785, February 21-March 16, 2012. Washington D.C.. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc94252/. Accessed May 22, 2013.
United States. Federal Communications Commission.. FCC Record, Volume 27, No. 3, Pages 1878 to 2785, February 21-March 16, 2012. Washington D.C.. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc94252/. Accessed May 22, 2013.