Anderson, Charles W., 1934-, author
Prentice-Hall, 1967
Buku Teks
Fowler, Robert Booth, author
Praeger, 1985
Buku Teks
edited by Philip John Davies and Fredric A. Waldstein
Manchester University Press, 1987
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