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
"Carr, Stephen","Improving cash crops in Africa : factors influencing the productivity of cotton, coffee, and tea grown by smallholders",,World Bank,1993,World Bank technical paper,,0821325094,,https://cir.nii.ac.jp/crid/1130000794962831616