Mcnulty, John K., author
west Publishing, 1989
Buku Teks
Mcnulty, John K., author
West Publishing, 1994
Buku Teks
Bittker, Boris I., author
Brown, 1984
Buku Teks
Gaffney, Dennis J., author
McGraw-Hill, 1982
Buku Teks
Hudson, David M., author
St. Paul, Minn, 1994
Buku Teks