Innes, Hammond, 1913-
Scandinavia
Time Inc., 1963
Buku Teks
Gough, Ian
The political economy of the welfare state
Macmillan, 1992
Buku Teks
Boumol, William J.
Welfare economics and the theory of the state
Harvard University Press, 1952
Buku Teks
Heckscher, Gunnar
The welfare state and beyond
Buku Teks SO
The state and social welfare: the objetives of policy
edited by Thomas and Dorothy Wilson
Longman, 1991
Buku Teks