Forsyth, Elizabeth. «Sobre David M. Pletcher, The Diplomacy of Annexation - Texas, Oregon, and the Mexican War». Historia Mexicana 28, no. 1 (julio 1, 1978): 131–138. Accedido mayo 6, 2024. https://historiamexicana.colmex.mx/index.php/RHM/article/view/2738.