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
"Georgetown University Round Table on Languages and Linguistics and Lowenberg, Peter H.","Language spread and language policy : issues, implications, and case studies",,Georgetown University Press,1988,Georgetown University Round Table on Languages and Linguistics,,0878401229,,https://cir.nii.ac.jp/crid/1130282269944242688