Barr, N. (2012). Economics of the Welfare State (5th.). Oxford.
Chicago-čujuhus (17. p.)Barr, Nicholas. Economics of the Welfare State. 5th. UK: Oxford, 2012.
MLA-čujuhus (9. p.)Barr, Nicholas. Economics of the Welfare State. 5th. Oxford, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.