Tobin, Allan J, author
Thomson, Brooks/Cole, 2005
Buku Teks
Tobin, Allan J., author
Harcourt College Publishing, 2001
Buku Teks
Tobin, Allan J.
Brooks/Cole, Thomson, 2005
Multimedia
Barnard, Chris, author
Pearson Prentice Hall, 2007
Buku Teks
Belk, Collen
Pearson - Benjamin Cummings, 2008
Buku Teks