El Atila del sur, book, 1913; (https://texashistory.unt.edu/ark:/67531/metapth149937/m1/1/: accessed June 4, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
El Atila del sur, book, 1913; (https://texashistory.unt.edu/ark:/67531/metapth149937/m1/1/: accessed June 4, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .