Cita APA (7a ed.)

Smith, D. G. (2012). On the Edge of Freedom: The Fugitive Slave Issue in South Central Pennsylvania, 1820-1870. Fordham University Press.

Cita Chicago Style (17a ed.)

Smith, David G. On the Edge of Freedom: The Fugitive Slave Issue in South Central Pennsylvania, 1820-1870. New York: Fordham University Press, 2012.

Cita MLA (8a ed.)

Smith, David G. On the Edge of Freedom: The Fugitive Slave Issue in South Central Pennsylvania, 1820-1870. Fordham University Press, 2012.