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)
GUNAWARDENA C. N.,Social presence theory and implications for interaction and collaborative learning in computer conferences,International Journal of Educational Telecommunications,,,1995,1,2,147-166,https://cir.nii.ac.jp/crid/1572824500765086336,