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. Advisory and Technical Committee for Communications and Transit,"Permanent committee on road traffic : report on the eighth session of the committee held at Geneva from 29th to June 1st, 1933",,League of Nations,1933,Series of League of Nations publications,,,,https://cir.nii.ac.jp/crid/1130000797057871488