van Rompuy, Ben
Wolters Kluwer Law & Business, 2012
Buku Teks
Hovenkamp, Herbert
West Publishing, 1993
Buku Teks
Barlow, Patricia
Kluwer Law & Taxation, 1988
Buku Teks
Garrett, James J.
Practising Law Institute, 1978
Buku Teks
Universitas Indonesia, 2002
UI - Skripsi Membership