@book{86721,
	author = {Kautsky, Karl. and Ayala, Francisco, and Fundación Cesáreo del Cerro.},
	title = {El programa de Erfurt : },
	editor = {Gráf. Socialista)},
	publisher = {[Fundación Cesáreo del Cerro], },
	year = {1933 (},
	address = {Madrid : }
}