@Book{BVMC:709707, author = {Guillén, Flavio}, title = {[Carta de Flavio Guillén a Francisco I. Madero. México (D.F.), 9 de mayo de 1911]}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2015}, year = {2015}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcj69b6} }