Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
,Report on the reform of the calendar : submitted to the Advisory and Technical Committee for Communications and Transit of the League of Nations by the Special Committee of Enquiry into the Reform of the Calendar,,League of Nations,1926,Publications of the League of Nations,,,,https://cir.nii.ac.jp/crid/1130282269418397440