Krever, Richard.
Butterworth, 1986
Buku Teks
Lucas, John, author
Cassell, 1980
Buku Referensi
Darrow-Kleinhaus, Suzanne
Thomson/west, 2007
Buku Teks
Barrett, Margreth
Emanuel Law Outlines, Inc., 1991
Buku Teks
Thompson, George C., author
Wadsworth, 1965
Buku Teks