APA (7 वां संस्करण) प्रशस्ति पत्र

Finkelman. Congress and the Crisis of the 1850s. Ohio University Press.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Finkelman. Congress and the Crisis of the 1850s. Ohio University Press.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Finkelman. Congress and the Crisis of the 1850s. Ohio University Press.

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