Rabinowitz, Alan, author
John Wiley & Sons, 1969
Buku Teks
The International City Manager's Association, 1950
Buku Teks
The International City Manager's Association, 1947
Buku Teks
Hansen, Alvin H. (Alvin Harvey), 1887-1975, author
George Allen and Unwin, 1944
Buku Teks
Tenner, Irving, author
Prentice-Hall, 1960
Buku Teks