La Iniciativa Fronteriza de la TCEQ, report, February 2012; (https://texashistory.unt.edu/ark:/67531/metapth303639/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
La Iniciativa Fronteriza de la TCEQ, report, February 2012; (https://texashistory.unt.edu/ark:/67531/metapth303639/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .