APA-čujuhus (7. p.)
Lewis, R. L. (2008). Welsh Americans: A history of assimilation in the coalfields. University of North Carolina Press.
Chicago-čujuhus (17. p.)
Lewis, Ronald L. Welsh Americans: A History of Assimilation in the Coalfields. Chapel Hill: University of North Carolina Press, 2008.
MLA-čujuhus (9. p.)
Lewis, Ronald L. Welsh Americans: A History of Assimilation in the Coalfields. University of North Carolina Press, 2008.
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