Sloan, Irving J.
Oceana Publications, 1987
Buku Teks
Smith
West Publishing Company, 1982
Buku Teks
Stockton, John M., author
West Publishing, 1992
Buku Teks
Smith, Len Young, author
West, 1966
Buku Teks
Stone, Bradford
West Publishing, 1995
Buku Teks