Copeland, T., & Gunns, A. F. (1993). The Centralia tragedy of 1919: Elmer Smith and the Wobblies. University of Washington Press.
Chicago-čujuhus (17. p.)Copeland, Tom, juo Albert F. Gunns. The Centralia Tragedy of 1919: Elmer Smith and the Wobblies. Seattle: University of Washington Press, 1993.
MLA-čujuhus (9. p.)Copeland, Tom, juo Albert F. Gunns. The Centralia Tragedy of 1919: Elmer Smith and the Wobblies. University of Washington Press, 1993.
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