Silverthorn, Dee Unglaub, author
Prentice-Hall, 2001
Buku Teks
Moffett, David F., author
Mosby, 1993
Buku Referensi
McGraw-Hill Education , 2006
Multimedia
Shepard, Robert S., author
Appleton-Century-Crofts, 1985
Buku Teks
Shier, David
McGraw-Hill, 2000
Multimedia