edited by Juan J. Linz and Alfred Stepan
John Hopkins University Press, 1978
Buku Teks
edited by David Collier
Princeton University Press, 1979
Buku Teks
editor-in-chief, Russell H. Fitzgibbon
University of Chicago Press, 1948
Buku Teks
Busey, James L., author
Random House, 1968
Buku Teks
Pierson, William W., author
D. Van Nostrand, 1953
Buku Teks