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 "Chʻoe, Su-yŏng",North Korea's agricultural reforms and challenges in the wake of the July 1 measure,,Korea Institute for National Unification,2007,Studies series,,9788984793996,,https://cir.nii.ac.jp/crid/1130000795672495872