Leslie, Douglas L., author
West Publishing, 1992
Buku Teks
Folsom, Ralph Haughwout, author
West Group, 1995
Buku Teks
Harrison, Jeffery L., author
Whes, a Thomson Reuters Business, 2011
Buku Teks
Champion, Walter T, author
WEST , 2009
Buku Teks
Frolik, Lawrence A., author
West Publishing , 2010
Buku Teks