Heron, C., & Penfold, S. (2005). The workers' festival: A history of labour day in Canada. Toronto [etc.]: University of Toronto Press.
Lua i Stíl Chicago (17ú heag.)Heron, Craig, agus Steve Penfold. The Workers' Festival: A History of Labour Day in Canada. Toronto [etc.]: University of Toronto Press, 2005.
Lua MLA (8ú heag.)Heron, Craig, agus Steve Penfold. The Workers' Festival: A History of Labour Day in Canada. Toronto [etc.]: University of Toronto Press, 2005.
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