editor Bertrand Badie; France Dirk Berg-Schlosser; Leonardo Morlino
Sage Publications, 2011
Buku Referensi
Williams, David
Routledge, 1996
Buku Teks SO
IPSA; AISP, 2009
Multimedia
Cadle, Patrick R.
UNDP, 2008
Buku Teks SO
Moten, Abdul Rashid
Thomson, 2006
Buku Teks SO