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 "Beaudrie, Sara M. and Fairclough, Marta Ana",Spanish as a heritage language in the United States : the state of the field,,Georgetown University Press,2012,Georgetown studies in Spanish linguistics series,,9781589019386,,https://cir.nii.ac.jp/crid/1130000798302165376