Carlberg, Michael, author
[Springer, Springer], 2012
eBooks
Gowland, David, author
Harvester Wheatsheaf, 1991
Buku Teks
Wilson, Thomas, author
Clarendon Press, 1984
Buku Teks
by Charles C. Holt ... [et al.]
Urban Institute Press, 1971
Buku Teks
Weintraub, Sidney, author
Addison-Wesley, 1978
Buku Teks