Kelly, C. (2006). The Roman Empire: A very short introduction. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Kelly, Christopher. The Roman Empire: A Very Short Introduction. Oxford; New York: Oxford University Press, 2006.
Lua MLA (8ú heag.)Kelly, Christopher. The Roman Empire: A Very Short Introduction. Oxford University Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.