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 Economic and Social Research Foundation (Tanzania) and Business Centre,"The parallel economy in Tanzania : magnitude, causes and policy implications",,Economic and Social Research Foundation,1996,ESRF discussion paper Series,,9987610110,,https://cir.nii.ac.jp/crid/1130000796644769920