Farley, Lawrence T.
Plebiscites and sovereignty : the crisis of political illegitimacy
Westview Press, 1986
 Buku Teks SO
Arblaster, Anthony
Democracy
Open University Press, 1987
 Buku Teks
Democracy
Oxford University Press, 1995
 Buku Teks
Schulz, Ernest B
Democracy
[publisher not identified], 1956
 Buku Teks
Shi Biqiu
Democracy
China Renmin University Press, 2015
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