Robertson, Priscilla
University Press, 1971
Buku Teks
edited by Jack A. Goldstone, Ted Robert Gurr, Farrokh Moshiri
Westview Press, 1991
Buku Teks
Kuhn, Thomas S.
The University of Chicago Press, [c1970]
Buku Teks
Droz, Jacques
Harper & Row, 1967
Buku Teks
Kunzru, Hari
Haru Kunzru, 2007
Buku Teks