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 "Singh, Jagdip and Rhoads, Gary K. and Marketing Science Institute",Boundary role ambiguity in marketing positions : scale development and validation,,Marketing Science Institute,1991,Report,,,,https://cir.nii.ac.jp/crid/1130282272195399296