United States. Federal Communications Commission. FCC Record, Volume 7, No. 9, Pages 2468 to 2843, April 20 - May 1, 1992, book, May 1992; (https://digital.library.unt.edu/ark:/67531/metadc1875/m1/1/: accessed July 18, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .