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
"Extra, Guus and Gorter, D. (Durk)","The other languages of Europe : demographic, sociolinguistic and educational perspectives",,Multilingual Matters,2001,Multilingual matters,,"1853595101,1853595098",,https://cir.nii.ac.jp/crid/1130000794240129280