APA-čujuhus (7. p.)
ebrary, Inc, & Wrigley, C. (1993). Challenges of labour: Central and Western Europe, 1917-1920. Routledge.
Chicago-čujuhus (17. p.)
ebrary, Inc, juo Chris Wrigley. Challenges of Labour: Central and Western Europe, 1917-1920. London ; New York: Routledge, 1993.
MLA-čujuhus (9. p.)
ebrary, Inc, juo Chris Wrigley. Challenges of Labour: Central and Western Europe, 1917-1920. Routledge, 1993.
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