Bonell, Michael
Transnational Juris Publications, 1994
Buku Teks
Handlin, Oscar
Atheneum, 1966
Buku Teks
Mill, John Stuart
David Campbell Publisher, 1992
Buku Referensi
Walker, Marianne McGettigan
American law Institute Publishers, 1995
Buku Teks
Riley, Jonathan
Routledge, 1998
Buku Teks