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. Dept. of Economic and Social Affairs,"Classifications of expenditure according to purpose : classification of the functions of government (COFOG), classification of individual consumption according to purpose (COICOP), classification of the purposes of non-profit institutions serving households (COPNI), classification of the outlays of producers according to purpose (COPP)",,United Nations,2000,Statistical papers,,9211614201,,https://cir.nii.ac.jp/crid/1130282268915087872