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 "Usvatte-Aratchi, G. and Srī Laṅkā Maha Băṅkuva and Srī Laṅkā Maha Băṅkuva. Centre for Banking Studies",Old age income security : pensions,,Central Bank of Sri Lanka,2004,Occasional papers,,,,https://cir.nii.ac.jp/crid/1130282273025104896