Heru Soepraptomo [and others]
Info Bank, 1997
Buku Teks
Putri Ratna Peruchka, author
Universitas Indonesia, 2004
UI - Tesis (Membership)
Artikel Jurnal
Yusup Saprudin, author
PTIK, 2006
Buku Teks
M. Arief Amrullah, author
Bayumedia Publishing, 2004
Buku Teks