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
"Bayley, Robert James and Cameron, Richard",Issues and debates in the study of variation,,Routledge,2015,Critical concepts in linguistics,,9780415731102,,https://cir.nii.ac.jp/crid/1130282269900579072