APA-ийн эшлэл(7 дахь хэвлэлт)
ebrary, Inc, & Gleason, S. E. (2006). The shadow workforce: Perspectives on contingent work in the United States, Japan, and Europe. W.E. Upjohn Institute for Employment Research.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
ebrary, Inc, ба Sandra E. Gleason. The Shadow Workforce: Perspectives on Contingent Work in the United States, Japan, and Europe. Kalamazoo, Mich.: W.E. Upjohn Institute for Employment Research, 2006.
MLA -ийн эшлэл (9 дэх хэвлэлт)
ebrary, Inc, ба Sandra E. Gleason. The Shadow Workforce: Perspectives on Contingent Work in the United States, Japan, and Europe. W.E. Upjohn Institute for Employment Research, 2006.
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