Marsa, Linda
Scribner , 1997
Buku Teks
Tussing, Arlon R.
PennWell Books, 1995
Buku Teks
Barrie, Donald S., author
John Wiley & Sons, 1991
Buku Teks
Gozha Primanda, author
Universitas Indonesia, 2014
UI - Skripsi Membership
Glass, Robert L., author
Prentice-Hall, 1982
Buku Teks