Black Gold, Volume 2, Number 1, 1976, periodical, 1976; (https://texashistory.unt.edu/ark:/67531/metapth151413/m1/1/: accessed April 28, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Black Gold, Volume 2, Number 1, 1976, periodical, 1976; (https://texashistory.unt.edu/ark:/67531/metapth151413/m1/1/: accessed April 28, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .