Cita APA (7th ed.)
ebrary, Inc, Bird, J. L., Peters, E., & Powell, J. M. (2013). Crusade and Christendom: Annotated documents in translation from Innocent III to the fall of Acre, 1187-1291. University of Pennsylvania Press.
Cita Chicago (17th ed.)
ebrary, Inc, Jessalynn Lea Bird, Edward Peters, i James M. Powell. Crusade and Christendom: Annotated Documents in Translation from Innocent III to the Fall of Acre, 1187-1291. Philadelphia: University of Pennsylvania Press, 2013.
Cita MLA (9th ed.)
ebrary, Inc, et al. Crusade and Christendom: Annotated Documents in Translation from Innocent III to the Fall of Acre, 1187-1291. University of Pennsylvania Press, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.