Cita APA (7a ed.)

Robertson, J. I. (1992). Civil war! america becomes one nation. Alferd A. Knopf.

Cita Chicago Style (17a ed.)

Robertson, James I. Civil War! America Becomes One Nation. New York: Alferd A. Knopf, 1992.

Cita MLA (9a ed.)

Robertson, James I. Civil War! America Becomes One Nation. Alferd A. Knopf, 1992.