Birch, Thomas
Pearson Education, 2006
Multimedia
Birch, Tom
Pearson - Prentice Hall, 2006
Buku Teks SO
Thiessen, Frank J.
Reston Publishing, 1984
Buku Teks SO
Eka Agus Subekti
Fakultas Teknik Universitas Indonesia, 1997
UI - Skripsi Membership
Roam, Dan
Ufuk Press, 2009
Buku Teks SO