Laureano Robles Carcedo
este texto que presentamos fue escrito por Kautsky, traducido del alemán Ciro Bayo y revisado y completado por M. de Unamuno, a petición del dirigente socialista Pablo Iglesias.
This text that it's presented was wrote by Karl Kautsky, it was translated to Spanish by Ciro Bayo and it was revised and completed by M. de Unamuno, as it was requested by the socialist leader Pablo Iglesias.