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) Kyu S. Hahn and Seungjin Ryu and Sungjin Park,Fragmentation in the Twitter Following of News Outlets,Journalism & Mass Communication Quarterly,1077-6990,SAGE Publications,2015-01-29,92,1,56-76,https://cir.nii.ac.jp/crid/1361137046111206528,https://doi.org/10.1177/1077699014559499