Reid, Grant W.
Erlangga, 2001
Buku Teks SO
Savage, Charles C.
University of Missouri Press, 1987
Buku Teks SO
JTart
JTart Publishing & Media, 2012
Buku Referensi
I Gde Rasananda Gelgel
Fakultas Teknik Universitas Indonesia, 2006
UI - Tesis Membership
Muller, Edward J.
Pearson - Prentice Hall, 2004
Buku Teks SO