Maxey, Chester C.
Macmillan, 1949
Buku Teks
Maxey, Chester C.
Macmillan, 1961
Buku Teks
edited by David Ingram
Blackwell , 2002
Buku Teks
edited by Lucian W. Pye and Sidney Verba
Princeton University Press , 1965
Buku Teks
edited by Joseph LaPalombara, Myron Weiner
Princeton University Press, 1966
Buku Teks