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
"Natorp, Paul Gerhard and Politis, Vasilis and Connolly, John and Laks, André",Plato's theory of ideas : an introduction to idealism,1. Aufl,Academia,2004,International Plato studies,,3896652508,,https://cir.nii.ac.jp/crid/1130000795755106176