Mayo, Henry B.
An introduction to democratic theory
Oxford University Press , 1960
 Buku Teks
Dahl, Robert A., 1915-2014
A preface to democratic theory
The University of Chicago Press, 1956
 Buku Teks
Cahn, Edmond
The predicament of democratic man / Edmond Cahn
Vakils, Feffer and Simons, 1961
 Buku Teks
Cassinelli, C.W.
The politics of freedom: an analysis of the modern democratic state / by C.W. Cassinelli
University of Washington Press , 1961
 Buku Teks
Democratic Innovation: deliberation, representation and association / Edited by Michael Saward
Michael Saward, editor
Routledge, 2000
 Buku Teks