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
"Weerdt, Joachim De and World Institute for Development Economics Research and United Nations University",Risk-sharing and endogenous network formation,,"World Institute for Development Economics Research, United Nations University",2002,WIDER discussion paper,,9291902381,,https://cir.nii.ac.jp/crid/1130282271545637248