Franklin

MLA

Marx, Karl, Friedrich Engels, and Richard Enmale. The Civil War In the United States. New York: International publishers, 1937.

APA

Marx, K., Engels, F., & Enmale, R. (1937). The civil war in the United States. New York: International publishers.

Chicago

Marx, Karl, Friedrich Engels, and Richard Enmale. The Civil War In the United States. New York: International publishers, 1937.