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
"Dellin, L. A. D.","Trade unions and labor legislation in Bulgaria, 1878-1953",,Mid-European Studies Center [of the National Committee for a Free Europe],1953,Mimeographed series,,,,https://cir.nii.ac.jp/crid/1130000796826219008