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
"Heytesbury, William, fl. 1340 and Spade, Paul Vincent","On ""insoluble"" sentences : chapter one of his Rules for solving sophisms",,Pontifical Institute of Mediaeval Studies,1979,Mediaeval sources in translation,,088844270X,,https://cir.nii.ac.jp/crid/1130282273091509248