Manurung, Berlin Haposan
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2005
UI - Tesis Membership
Williams, Robert L.
The Netherlands Wolters Kluwer Law Business, 2014
Buku Teks
Easson, Alex
Kluwer Law International, 2004
Buku Teks
Arnold, Brian J.
Kluwer Law International, 1995
Buku Teks
edited by Madalina Cotrut,
IBFD, 2018
Buku Teks