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
International Bank for Reconstruction and Development,Bulgaria : crisis and transition to a market economy,,World Bank,1991,World Bank country study,,"0821318942,0821318950",,https://cir.nii.ac.jp/crid/1130000794415586560