The Edwin mellen Press, 1987
Buku Teks
Soodak, Harry, author
John Wiley & Sons, 1950
Buku Teks
Banfield, Edward C., author
Free Press, 1965
Buku Teks
Banfield, Edward C., author
Free Press, 1951
Buku Teks
Banfield, Edward C., author
Free Press, 1966
Buku Teks