Cita APA (7a ed.)

Jordan, W. C. (1979). Louis IX and the challenge of the Crusade: A study in rulership. Princeton University Press.

Cita Chicago Style (17a ed.)

Jordan, William Chester. Louis IX and the Challenge of the Crusade: A Study in Rulership. Princeton, New Jersey: Princeton University Press, 1979.

Cita MLA (8a ed.)

Jordan, William Chester. Louis IX and the Challenge of the Crusade: A Study in Rulership. Princeton University Press, 1979.