Araque Hontagas, Natividad, and Carmen Rodríguez Guerrero. 2011. “One Hundred Years of Teaching Philosophy at the Instituto Cardenal Cisneros Madrid (1837-1936)”. Revista Complutense de Educación 22 (1): 47-67. https://doi.org/10.5209/rev_RCED.2011.v22.n1.3.