Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Morse, Dean and Gray, Susan H. and Ginzberg, Eli",Early retirement--boon or bane? : a study of three large corporations,,"Allanheld, Osmun",1980,LandMark studies,,0916672441,,https://cir.nii.ac.jp/crid/1130282269595502208