Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Caulkin, Simon and Economist Publications (Firm)","Drucker, Ohmae, Porter & Peters : management briefings from the Economist conferences, 1989",,The Economist Publications,1990,The Economist Publications management guides,,0850584027,,https://cir.nii.ac.jp/crid/1130000798354991104