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 Great Britain and Sierra Leone and Great Britain. Foreign and Commonwealth Office,Agreement between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the Republic of Sierra Leone on certain commercial debts : London 17 October 1985,,H.M.S.O.,1985,Treaty series,,0101967306,,https://cir.nii.ac.jp/crid/1130000795841391232