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
"Raballand, Gaël and Refas, Salim and Beuran, Monica and Isik, Gozde",Why does cargo spend weeks in Sub-Saharan African ports? : lessons from six countries,,World Bank,2012,Directions in development,,9780821394991,,https://cir.nii.ac.jp/crid/1130282271913980672