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 "Von Foerster, Heinz and Pörksen, Bernhard and Leube, Karen",Understanding systems : conversations on epistemology and ethics,,"Kluwer Academic/Plenum Publishers,Carl-Auer-Systeme",2002,IFSR international series on systems science and engineering,,"0306467526,3896702343",,https://cir.nii.ac.jp/crid/1130000795819278720