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
"Birke, Wolfgang",European elections by direct suffrage : a comparative study of the electoral systems used in Western Europe and their utility for the direct election of a European Parliament,,A.W. Sythoff,1961,European aspects,,,,https://cir.nii.ac.jp/crid/1130282269492740992