Cita APA (7a ed.)

Ryan, E. (2011). Federalism and the tug of war within. Oxford University Press.

Cita Chicago Style (17a ed.)

Ryan, Erin. Federalism and the Tug of War Within. Oxford ; New York: Oxford University Press, 2011.

Cita MLA (8a ed.)

Ryan, Erin. Federalism and the Tug of War Within. Oxford University Press, 2011.