United States. Federal Communications Commission. FCC Record, Volume 27, No. 18, Pages 14770 to 15765, November 26 - December 13, 2012, book, December 2012; (https://digital.library.unt.edu/ark:/67531/metadc171133/m1/1/: accessed April 24, 2025), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .