Cita APA (7th ed.)

Barr, N. A. (2012). The economics of the welfare state (5th ed.). Oxford University Press.

Cita Chicago (17th ed.)

Barr, N. A. The Economics of the Welfare State. 5th ed. Oxford: Oxford University Press, 2012.

Cita MLA (9th ed.)

Barr, N. A. The Economics of the Welfare State. 5th ed. Oxford University Press, 2012.