Canadian Tax Foundation, 1989
Buku Teks
Organization for Economic Co-Operation and Development, 2001
Buku Teks
Muller, Johann, author
IBFD, 2005
Buku Teks
Joni, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2005
UI - Tesis (Membership)
Richardson, Margaret Milner, author
John Wiley & Sons, 2000
Buku Teks