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
"Harrison, S. and Great Britain. Dept. of Overseas Trade","Economic conditions in Bulgaria, dated July, 1930 : report",,H.M.S.O.,1930,Department of Overseas Trade,,,,https://cir.nii.ac.jp/crid/1130000797822704000