Stone, Bradford
West Publishing, 1995
Buku Teks
White, James J., author
West Publishing Co., 1972
Buku Teks
by Len Young Smith ... [et al.]
West Publishing, 1982
Buku Teks
Smerdon, Richard, author
Sweet and Maxwel, 2007
Buku Teks
BAPEPAM, 1999
Buku Teks