Dam, Kenneth W.
The Brooking Institution, 2006
Buku Teks SO
Bunn, Isabella D.
Hart Publishing, 2012
Buku Teks SO
Ade Maman Suherman
Ghalia Indonesia, 2005
Buku Teks
edited by Brian Z. Tamanaha, Caroline Sage, Michael Woolcock
Cambridge University Press, 2012
Buku Teks SO
Eslava, Luis
Cambridge University Press, 2015
Buku Teks SO