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
"Photius I, Saint, Patriarch of Constantinople, ca.ca. 891 and Boris I, Khan of Bulgaria, d. 907 and White, Despina Stratoudaki and Berrigan, Joseph R.",The Patriarch and the Prince : the letter of Patriarch Photios of Constantinople to Khan Boris of Bulgaria,,Holy Cross Orthodox Press,1982,The Archbishop Iakovos library of ecclesiastical and historical sources,,"0916586529,0916586537",,https://cir.nii.ac.jp/crid/1130282272998873344