Powell, J. M. (1986). Anatomy of a crusade, 1213-1221. University of Pennsylvania Press.
Chicago-čujuhus (17. p.)Powell, James M. Anatomy of a Crusade, 1213-1221. Philadelphia [Pa.]: University of Pennsylvania Press, 1986.
MLA-čujuhus (9. p.)Powell, James M. Anatomy of a Crusade, 1213-1221. University of Pennsylvania Press, 1986.
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