Holsinger, Ralph L.
Media law
McGraw-Hill, 1994
 Buku Teks
Smith, James Cruickshanks, 1867-1946
Fundamental Principles of Law The Law of Contract
Sweet & Maxwell, 1989
 Buku Teks
Kelsen, Hans
Principles of international law
Holt, Rinehart and Winston, 1967
 Buku Teks
Goldstein, Paul
Copyright : principles, law and practice
Little, Brown, 1989
 Buku Teks
Marasinghe, Lakshman
Principles of international trade law
Butterworth Asia, 1998
 Buku Teks