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
"Tritton, A. S. (Arthur Stanley)",Caliphs and their non-Muslim subjects : a critical study of the Covenant of ʿUmar,,Routledge,2008,Routledge library editions,,"9780415426008,9780415440950",,https://cir.nii.ac.jp/crid/1130282268736206848