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 "Tupper, Janice",Dynamics of self-employment among older workers,,Nova Publishers,2014,Business economics in a rapidly-changing world series,,9781633218239,,https://cir.nii.ac.jp/crid/1130282269670345600