@Book{BVMC:789882, author = {Esplá, Carlos}, title = {Karl Liebknecht y el cardenal Mercier}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2017}, year = {2017}, url = {https://www.cervantesvirtual.com/obra/karl-liebknecht-y-el-cardenal-mercier-el-pueblo-789882} }