Peña-Ramos, José Antonio, and Joaquín Ferro-Rodríguez. “Evolution of the Interests and Presence of the United States at the Triple Frontier”. Estudios Internacionales 50, no. 191 (December 27, 2018): 9–36. Accessed March 13, 2025. https://boletinfilologia.uchile.cl/index.php/REI/article/view/52010.