Richards, M. D. (2004). Revolutions in world history. Routledge.
Lua i Stíl Chicago (17ú heag.)Richards, Michael D. Revolutions in World History. New York: Routledge, 2004.
Lua MLA (8ú heag.)Richards, Michael D. Revolutions in World History. Routledge, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.