Mannheim, Karl, author
Freedom, power and democratic planning
Routledge & Kegan Paul, 1951
 Buku Teks
Mayo, Henry B., author
An introduction to democratic theory
Oxford University Press , 1960
 Buku Teks
Dahl, Robert A., 1915-2014, author
A preface to democratic theory
The University of Chicago Press, 1956
 Buku Teks
Peroutka, Ferdinand
A Democratic manifesto / Ferdinand Peroutka
Voyage Press, 1959
 Buku Teks
Cahn, Edmond
The predicament of democratic man / Edmond Cahn
Vakils, Feffer and Simons, 1961
 Buku Teks