Smith, E. T. (1929). A new approach to European history: Teacher's manual. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Smith, Ernest Thomas. A New Approach to European History: Teacher's Manual. Chicago: University of Chicago Press, 1929.
Lua MLA (8ú heag.)Smith, Ernest Thomas. A New Approach to European History: Teacher's Manual. University of Chicago Press, 1929.
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