edited, Alberta M. Sbragia
Westview Press, 1983
Buku Teks
Stoker, Gerry, author
Macmillan, 1991
Buku Teks
The International City Manager's Association
[publisher not identified], 1962
Buku Teks
Hicks, Ursula K., author
Clarendon Press, 1961
Buku Teks
Bromage, Arthur W.
Appleton-Century-Crofts, 1950
Buku Teks