West Publishing Co, 1993
Buku Referensi
West Publishing Company, 1996
Buku Teks
Rodgers, William H., author
West Publishing, 1994
Buku Teks
Findley, Roger W., author
West Publishing, 1996
Buku Teks
Findley, Roger W., author
West Publishing, 1992
Buku Teks