Kitzinger, Beatrice. 2019. The Cross, the Gospels, and the Work of Art in the Carolingian Age. Cambridge University Press. doi:10.1017/9781108553636. Reference Link
Kitzinger, Beatrice, and Joshua O’Driscoll. 2019. After the Carolingians: Manuscript Illumination in the 10-11th Centuries (Sense, Matter, and Medium). de Gruyter. doi:10.1515/9783110579499. Reference Link