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 "Choudhury, Riffat Zaman",Competitiveness of Charka in the production of spun silk yarn in Bangladesh,,"Bureau of Economic Research, University of Dhaka",2000,Research report (Bureau of Economic Research),,,,https://cir.nii.ac.jp/crid/1130000794560740864