Bartol, C. A. (1861). The duty of the time. Walker, Wise.
Lua i Stíl Chicago (17ú heag.)Bartol, C. A. The Duty of the Time. Boston: Walker, Wise, 1861.
Lua MLA (8ú heag.)Bartol, C. A. The Duty of the Time. Walker, Wise, 1861.
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