著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI)
Matthew Gentzkow and Jesse M. Shapiro and Michael Sinkinson,Competition and Ideological Diversity: Historical Evidence from US Newspapers,American Economic Review,0002-8282,American Economic Association,2014-10-01,104,10,3073-3114,https://cir.nii.ac.jp/crid/1363670320950156800,https://doi.org/10.1257/aer.104.10.3073