Holsinger, Ralph L.
McGraw-Hill, 1994
Buku Teks
Smith, James Cruickshanks, 1867-1946
Sweet & Maxwell, 1989
Buku Teks
Kelsen, Hans
Holt, Rinehart and Winston, 1967
Buku Teks
Goldstein, Paul
Little, Brown, 1989
Buku Teks
Marasinghe, Lakshman
Butterworth Asia, 1998
Buku Teks