Allen, W. H. (1917). Universal training for citizenship and public service. The Macmillan Company.
Lua i Stíl Chicago (17ú heag.)Allen, William H. Universal Training for Citizenship and Public Service. New York: The Macmillan Company, 1917.
Lua MLA (8ú heag.)Allen, William H. Universal Training for Citizenship and Public Service. The Macmillan Company, 1917.
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