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
"日本銀行金融研究所 and Packer, Frank",Credit ratings and the Japanese corporate bond market,,"Institute for Monetary and Economic Studies, Bank of Japan",2000,IMES discussion paper series,,,,https://cir.nii.ac.jp/crid/1130000796778377344