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) Willem P. Nel and James D. Ward,Towards a rational sustainability framework,Sustainability science : official journal of the Integrated Research System for Sustainability Science,18624065,Tokyo : Springer Japan,2015-07,10,3,515-520,https://cir.nii.ac.jp/crid/1524232505105043456,