Binder, David A.
West Pub. Co.,, 1977
Buku Teks
Shaffer, Thomas L.
West Publishing Company, 1976
Buku Teks
Shaffer, Thomas L.
West Publishing, 1987
Buku Teks
Price, Susan C.
West Publishing Co,
Buku Teks
Bellow, Gary, author
Foundation Press, 1978
Buku Teks