Cita APA (7a ed.)

Barr, N. (1993). The economics of the welfare state (2nd ed.). Oxford University Press.

Cita Chicago Style (17a ed.)

Barr, Nicholas. The Economics of the Welfare State. 2nd ed. Oxford: Oxford University Press, 1993.

Cita MLA (9a ed.)

Barr, Nicholas. The Economics of the Welfare State. 2nd ed. Oxford University Press, 1993.