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 "Escobal, Javier and Torero, Maximo and World Institute for Development Economics Research and United Nations University",Adverse geography and differences in welfare in Peru,,"World Institute for Development Economics Research, United Nations University",2003,WIDER discussion paper,,9291905321,,https://cir.nii.ac.jp/crid/1130000793907533568