@Book{BVMC:703314,
author = {Calderón, E.},
title = {[Carta de E. Calderón a Francisco I. Madero. Eagle Pass (E.U.A.), 13 de abril de 1911]},
publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2014},
year = {2014},
url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc515v4}
}