The Civil War in the United States

MLA

Marx, Karl, and Friedrich Engels. The Civil War In the United States. Centennial [i.e. 3d] ed. New York: International Publishers, 1961.

APA

Marx, K., & Engels, F. (1961). The Civil War in the United States. Centennial [i.e. 3d] ed. New York: International Publishers.

Chicago

Marx, Karl, and Friedrich Engels. The Civil War In the United States. Centennial [i.e. 3d] ed. New York: International Publishers, 1961.