APA-viite (7. p.)
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.
Chicago-viite (17. p.)
ebrary, Inc, Jessalynn Lea Bird, Edward Peters, ja 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.
MLA-viite (9. p.)
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.
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