Powell, J. M. (2007). Church and crusade: Frederick II and Louis IX. The catholic historical review, 93(2), VI, 250-264. doi:10.1353/cat.2007.0201
Cita Chicago Style (17a ed.)Powell, James M. "Church and Crusade: Frederick II and Louis IX." The Catholic Historical Review 93, no. 2 (2007): VI, 250-264, https://doi.org/10.1353/cat.2007.0201.
Cita MLA (9a ed.)Powell, James M. "Church and Crusade: Frederick II and Louis IX." The Catholic Historical Review, vol. 93, no. 2, 2007, pp. VI, 250-264, https://doi.org/10.1353/cat.2007.0201.
Precaución: Estas citas no son 100% exactas.
