Prentice-Hall, 2001
Buku Teks
Waugh, Anne, author
Churchill Livingstone , 2006
Buku Teks
Saladin, Kenneth S., author
New YorkMc Graw-Hill Book Company, 2004
Buku Teks
Pearson Education, 2008
Multimedia
Martini, Frederic H., author
Pearson, 2006
Buku Teks