Mills, Criss B., author
Wiley-Academy, 2011
Buku Teks
Capehart, Barney L.
The Fairmont Press, Inc., 2008
Buku Teks
Shay, Susan T., author
Kiplinger Books, 2001
Buku Teks
editors, Joseph De Chiara, Julius Panero, Martin Zelnik
McGraw-Hill, 2001
Buku Referensi
Stitt, Fred A., editor
McGraw-Hill, 1999
Buku Referensi