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
"Erdmann, Ursula M.",Language maintenance versus assimilation : a study of the fate of low German in northeast Lower Saxony since World War II,,F. Steiner,1992,Zeitschrift für Dialektologie und Linguistik : Beihefte,,3515061886,,https://cir.nii.ac.jp/crid/1130282270689263232