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 "Krugman, Paul R.",Geography and trade,1st MIT Press paperback ed,"Leuven University Press,MIT Press",1993,Gaston Eyskens lecture series,,0262610868,,https://cir.nii.ac.jp/crid/1130000796768351872