M. Fernández Portaencasa, “Marta Szada, Conversion and the Contest of Creeds in Early Medieval Christianity, Cambridge, Cambridge University Press, 2024, 360 pp. [ISBN: 978-1-009-42644-2]”, Gerión, vol. 44, no. 1, pp. 253–255, Jun. 2026, doi: 10.5209/geri.108396.