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
"Jankoff, Dimiter A.",Labor cooperative farms in Bulgaria,,Mid-European Studies Center of the National Committee for a Free Europe,1953,Mimeographed series,,,,https://cir.nii.ac.jp/crid/1130282272539550592