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 "Laitinen, Kenneth",A theory of the multiproduct firm,,"North-Holland Pub. Co.,Distributors for the U.S.A. and Canada, Elsevier North-Holland",1980,Studies in mathematical and managerial economics,,0444854959,,https://cir.nii.ac.jp/crid/1130282273216754944