United States. Federal Communications Commission. FCC Record, Volume 27, No. 7, Pages 5674 to 6652, May 23 - June 15, 2012, book, June 2012; (https://digital.library.unt.edu/ark:/67531/metadc111171/m1/3/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .