Kobliski, Kathy J, author
Entrepreneur Press, 2005
Buku Teks
Indah Larasati, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2009
UI - Skripsi (Open)
Rr. Hindrarti Devi Prayogo, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 1996
UI - Skripsi (Membership)
Hotchkiss, George Burton, author
Alexander Hamilton Institute , 1961
Buku Teks
Wells, William D., author
Prentice-Hall, 2000
Buku Teks