Ramos Frendo, E.M. 2018. Sofía Valera Alcalá-Galiano, Duchess of Malakoff, ¿an artistic career signed by frustration?. Boletín de Arte. 29 (Mar. 2018), 253–272. DOI:https://doi.org/10.24310/BoLArte.2008.v0i29.4432.