Mayo, Henry B.
An introduction to democratic theory
Oxford University Press , 1960
 Buku Teks
Understanding democratic politics: an introduction
Sage Publications, 2012
 eBooks
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
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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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