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
"Krūma, Kristīne","EU citizenship, nationality and migrant status : an ongoing challenge",,Martinus Nijhoff,2014,Immigration and asylum law and policy in Europe,,9789004251588,,https://cir.nii.ac.jp/crid/1130282269555976704