APA (7 वां संस्करण) प्रशस्ति पत्र

Richardson, H. C. (1997). The greatest nation of the earth: Republican economic policies during the Civil War. Harvard University Press.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Richardson, Heather Cox. The Greatest Nation of the Earth: Republican Economic Policies During the Civil War. Cambridge, Mass.: Harvard University Press, 1997.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Richardson, Heather Cox. The Greatest Nation of the Earth: Republican Economic Policies During the Civil War. Harvard University Press, 1997.