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
"Aḥmad ibn Idrīs and Hofheinz, Albrecht",The letters of Aḥmad ibn Idrīs = Rasāʾil Aḥmad ibn Idrīs,,Northwestern Universty Press,1993,Series in Islam and society in Africa,,0810110709,,https://cir.nii.ac.jp/crid/1130000794310922880