著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Purcell, Maureen","Papal crusading policy : the chief instruments of papal crusading policy and crusade to the Holy Land from the final loss of Jerusalem to the fall of Acre, 1244-1291",,E.J. Brill,1975,Studies in the history of Christian thought,,9004043179,,https://cir.nii.ac.jp/crid/1130000796609187712