Gunawan T.
Delta teknik group, 1988
Buku Teks
Davies, John W, author
Prentice-Hall, 2001
Buku Teks
Rathbone, Robert R., author
Addison-Wesley Publishing Company, 1985
Buku Teks
Schmidt, Steven
Prentice-Hall, 1983
Buku Teks
Subaiha Kipli, author
Universitas Indonesia, 2007
UI - Tesis (Membership)