Cita APA (7a ed.)

Cassady, R. F. (2011). The Emperor and the Saint: Frederick II of Hohenstaufen, Francis of Assisi, and Journeys to Medieval Places. Northern Illinois University Press.

Cita Chicago Style (17a ed.)

Cassady, Richard F. The Emperor and the Saint: Frederick II of Hohenstaufen, Francis of Assisi, and Journeys to Medieval Places. DeKalb: Northern Illinois University Press, 2011.

Cita MLA (8a ed.)

Cassady, Richard F. The Emperor and the Saint: Frederick II of Hohenstaufen, Francis of Assisi, and Journeys to Medieval Places. Northern Illinois University Press, 2011.