La Lactancia Materna: Despues De Los 6 Meses, pamphlet, June 2012; (https://texashistory.unt.edu/ark:/67531/metapth640177/m1/8/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
La Lactancia Materna: Despues De Los 6 Meses, pamphlet, June 2012; (https://texashistory.unt.edu/ark:/67531/metapth640177/m1/8/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .