Schwarz, Stephen
West Publishing, 1994
Buku Teks
Postlewaite, Philip F., author
McGraw-Hill, 1980
Buku Teks
Kahn, Douglas A., 1934-, author
Thomson/West, 1994
Buku Teks
Burke, Karen C., 1951-, author
West Publishing, 1996
Buku Teks
Bittker, Boris I., author
Warren, Gorham and Lamont, 1971
Buku Teks