Mayo, Henry B.
An introduction to democratic theory
Oxford University Press , 1960
 Buku Teks
Understanding democratic politics: an introduction
Sage Publications, 2012
 eBooks
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
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Democratic Innovation: deliberation, representation and association / Edited by Michael Saward
Michael Saward, editor
Routledge, 2000
 Buku Teks