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
League of Nations. Secretary-General ( : Earl of Perth),"Slavery : Report by the Secretary-General, presented in accordance with the Assembly resolution of September 21st, 1929",,,1930,Series of League of Nations publications,,,,https://cir.nii.ac.jp/crid/1130282269210524288