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 United Nations. Department of Economic and Social Affairs. Statistics Division,National practices in compilation and dissemination of external trade index numbers : A technical report,,United nations,2005,Statistical papers,,9211614732,,https://cir.nii.ac.jp/crid/1130000794807337216