Cita APA (7th ed.)

Marx, K. H., & Engels, F. (1937). The civil war in the United States. International Publishers.

Cita Chicago (17th ed.)

Marx, Karl Heinrich, i Frederick Engels. The Civil War in the United States. Nueva York: International Publishers, 1937.

Cita MLA (9th ed.)

Marx, Karl Heinrich, i Frederick Engels. The Civil War in the United States. International Publishers, 1937.