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