Andrews, jean
Course technology cengage learning, 2013
Buku Teks
Andrews, jean
Course Technology, 2013
Buku Teks
Langer, Arthur M., editor
Springer, 2012
eBooks
Fisher, David T.
Prentice-Hall, 1991
Buku Referensi
Ayres, James J.
New York: John Wiley & Sons, 1990,
Buku Referensi