FCC Record, Volume 5, No. 7, Pages 1879 to 2429, March 26 - April 6, 1990, book, April 1990; (https://digital.library.unt.edu/ark:/67531/metadc1649/m1/1/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .