United States. Federal Communications Commission. FCC Record, Volume 3, No. 14, Pages 4085 to 4354, July 5 - July 15, 1988, book, July 1988; (https://digital.library.unt.edu/ark:/67531/metadc1623/m1/60/: accessed May 8, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .