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
"Knodt, Michèle and Princen, Sebastiaan",Understanding the European Union's external relations,,Routledge,2003,Routledge/ECPR studies in European political science,,0415296978,,https://cir.nii.ac.jp/crid/1130282269360528640