Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Nakamoto Ryuichi,The Effect of Client Portfolio on Organizational Knowledge:,Organizational Science,02869713,The Academic Association for Organizational Science,2018-06-20,51,4,43-49,https://cir.nii.ac.jp/crid/1390845712992350464,https://doi.org/10.11207/soshikikagaku.51.4_43