Klooster, Wim
University of Hawaii Press , 2012
Multimedia
Robertson, Priscilla
University Press, 1971
Buku Teks SO
edited by Jack A. Goldstone, Ted Robert Gurr, Farrokh Moshiri
Westview Press, 1991
Buku Teks SO
Kuhn, Thomas S.
The University of Chicago Press, [c1970]
Buku Teks SO
Droz, Jacques
Harper & Row, 1967
Buku Teks SO