Wang, James C.F., author
Prentice-Hall, 1994
Buku Teks
Dolbeare, Kenneth M., author
D.C. Heath, 1985
Buku Teks
edited by G. John Ikenberry
Cambridge University Press, 2014
Buku Teks
Almond, Gabriel A., author
Little, Brown & Co., 1978
Buku Teks
Rose, Leo E.
Cornell University Press, 1970
Buku Teks