Schumpeter, Joseph A.
Capitalism, socialism, and democracy
Harper , 1950
 Buku Teks SO
Cadeddu, Davide
Reimagining democracy: on the political project of Adriano Olivetti
Springer, 2012
 eBooks
Shi Biqiu
Democracy
China Renmin University Press, 2015
 eBooks
Arblaster, Anthony
Democracy
Open University Press, 1987
 Buku Teks
Schulz, Ernest B
Democracy
[publisher not identified], 1956
 Buku Teks