Cita APA (7a ed.)

Grig, L., & Kelly, G. (2012). Two Romes. Oxford University Press.

Cita Chicago Style (17a ed.)

Grig, Lucy, y Gavin Kelly. Two Romes. Oxford ; New York: Oxford University Press, 2012.

Cita MLA (9a ed.)

Grig, Lucy, y Gavin Kelly. Two Romes. Oxford University Press, 2012.