MacCorkle, Stuart A.
D.C. Heath and Company, 1948
Buku Teks
The International City Manager's Association, 1950
Buku Teks
The International City Manager's Association, 1947
Buku Teks
Judd, Dennis R., author
Little, Brown, 1979
Buku Teks
MacDonald, Austin F., author
Thomas Y. Crowell , 1951
Buku Teks