Cita APA (7a ed.)

Randall, J. G., & Donald, D. H. (1961). The divided Union. Little, Brown.

Cita Chicago Style (17a ed.)

Randall, J. G., y David Herbert Donald. The Divided Union. Boston [etc.]: Little, Brown, 1961.

Cita MLA (9a ed.)

Randall, J. G., y David Herbert Donald. The Divided Union. Little, Brown, 1961.