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
 eBooks
English workshop
New York : Holt, Rinehart and Winston, 1995,
 Buku Teks