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
"Poddar, Sougata and World Institute for Development Economics Research and United Nations University",Network externality and software piracy,,"World Institute for Development Economics Research, United Nations University",2002,WIDER discussion paper,,9291903701,,https://cir.nii.ac.jp/crid/1130282271272543232