Allen, James P., author
Cambridge University Press, 2010
Buku Teks
Hewings, Martin, author
Cambridge University Press, 2006
Buku Teks
Muhibbin Syah, author
RajaGrafindo Persada, 2010
Buku Teks
Dean, Howard H.
Prentice-Hall, 1962
Buku Teks
New York Graphic Society, 1956
Buku Referensi