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
"Philipov, Dimiter and United Nations. Economic Commission for Europe and United Nations Population Fund",Fertility and family surveys in countries of the ECE region : standard country report : Bulgaria,,United Nations,2001,Economic studies,,9211167825,,https://cir.nii.ac.jp/crid/1130000796016665984