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 "Porto, Massimiliano",Using R for trade policy analysis : R codes for the UNCTAD and WTO practical guide,,Springer International Publishing,2020,Springer briefs in economics,,9783030345280,,https://cir.nii.ac.jp/crid/1130285376624671872