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
"Erzan, Refik and Laird, Sam and Yeats, Alexander J. and UNCTAD",On the potential for expanding South-South trade through the extension of mutual preferences among developing countries,,United Nations Conference on Trade and Development,,Discussion papers,,,,https://cir.nii.ac.jp/crid/1130000796100981760