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.
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