Tyler, A. F. (1944). Freedom's ferment: Phases of American social history to 1860. University of Minnesota press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTyler, Alice Felt. Freedom's Ferment: Phases of American Social History to 1860. Minneapolis: University of Minnesota press, 1944.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTyler, Alice Felt. Freedom's Ferment: Phases of American Social History to 1860. University of Minnesota press, 1944.
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