Richards, M. D. (2004). Revolutions in world history. Routledge.
Cita Chicago (17th ed.)Richards, Michael D. Revolutions in World History. New York: Routledge, 2004.
Cita MLA (8th ed.)Richards, Michael D. Revolutions in World History. Routledge, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.