Arblaster, Anthony
Open University Press, 1987
Buku Teks
Schulz, Ernest B
[publisher not identified], 1956
Buku Teks
Shi Biqiu
China Renmin University Press, 2015
eBooks
Bresser-Pereira, Luiz Carlos
Oxford University Press, 2007
Buku Teks
Tocqueville, Alexis de
David Campbell Publishers, 1994
Buku Referensi