United States. Federal Communications Commission. FCC Record, Volume 14, No. 26, Pages 13834 to 14523, August 23 - September 3, 1999, book, September 1999; (https://digital.library.unt.edu/ark:/67531/metadc2931/m1/665/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .