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 "Gong, Xiaoning and Patel, Chandrakant A. and International Monetary Fund. Statistics Dept",Improving the estimation methodology of monthly data in direction of trade statistics,,International Monetary Fund,1994,IMF working paper,,,,https://cir.nii.ac.jp/crid/1130282271393683840