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
"Coleman, Jonathan Roger and Akiyama, T. (Takamasa) and Varangis, Panayotis N. and World Bank. International Economics Dept.",How policy changes affected cocoa sectors in Sub-Saharan African countries,,"International Economics Dept., World Bank",1993,Policy research working papers,,,,https://cir.nii.ac.jp/crid/1130000794917391232