@Book{BVMC:713399, author = {Ramírez, Sergio}, title = {Un sandinismo en que creer [Prólogo a "La ruptura del Frente Sandinista" de Nayar López Castellanos]}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2015}, year = {2015}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcrv2j6} }