Gamer, Robert E., author
Allyn and Bacon, 1976
Buku Teks
Cammack, Paul Anthony, author
Macmillan, 1993
Buku Teks
penyunting, Larry Diamond; penerjemah, Matheos Nalle
Yayasan Obor Indonesia, 1993
Buku Teks
edited by Gabriel A. Almond, James S. Coleman
Princeton University Press, 1960
Buku Teks
edited and with Introductions by Paul E. Sigmund
Frederick A. Praeger, 1967
Buku Teks