Knapp, Sarah Edison, author
John Wiley & Sons, 2005
Buku Teks
Purselle, David C., author
New Jersey, 2003
Buku Teks
Sera Revalina, author
Sekolah Kajian Stratejik dan Global Universitas Indonesia, 2013
UI - Tesis (Membership)
Primavera, 1996
Buku Referensi
Buku Teks