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
"Holmberg, Börje",Theory and practice of distance education,2nd ed,Routledge,1995,Routledge studies in distance education,,0415112923,,https://cir.nii.ac.jp/crid/1130282271040854272