Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Oka Keiko,Work Styles and Employee Status in the Age of Gig Economy in the United States,阪大法学,04384997,The Law Association of Osaka University,2017-11-30,67,3-4,181-202,https://cir.nii.ac.jp/crid/1390573242828175232,https://doi.org/10.18910/87032