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 Verhoeven, Ludo Th",The cross-linguistic study of bilingual development,,North-Holland,1994,"Verhandelingen der Koninklijke Nederlandse Akademie van Wetenschappen, Afdeeling Letterkunde",,0444857788,,https://cir.nii.ac.jp/crid/1130282270189617280