Lowe, John S., author
West Publishing, 1995
Buku Teks
Folsom, Ralph Haughwout, author
[publisher not identified], 2000
Buku Teks
Loewy, Arnold H.
St.paul Minn, 1987
Buku Teks
Sydenham, Angela, author
Sweet & Maxwell, 2000
Buku Teks
Nolan-Haley, Jacqueline M., author
West, 1992
Buku Teks