edited by John R. Bowen and Roger Petersen
Cambridge University Press, 1999
Buku Teks
edited by Max F. Millikan
Yale University Press, 1953
Buku Teks
edited by Stephan Haggard, Chung H. Lee and Sylvia Maxfield
Cornell University Press, 1993
Buku Teks
edited by Gabriel A. Almond, James S. Coleman
Princeton University Press, 1960
Buku Teks
Von der Mehden, Fred R.
Prentice-Hall, 1969
Buku Teks