Dirck, B. R. (2012). Lincoln and the Constitution. Southern Illinois University Press.
Čikaški stil citiranja (17. izdanje)Dirck, Brian R. Lincoln and the Constitution. Carbondale: Southern Illinois University Press, 2012.
MLA način citiranja (9. izdanje)Dirck, Brian R. Lincoln and the Constitution. Southern Illinois University Press, 2012.
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