Las Sabinas, Volume 1, Number 1, January 1975, periodical, January 1975; (https://texashistory.unt.edu/ark:/67531/metapth255299/m1/1/: accessed May 9, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Las Sabinas, Volume 1, Number 1, January 1975, periodical, January 1975; (https://texashistory.unt.edu/ark:/67531/metapth255299/m1/1/: accessed May 9, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .