Barban, Arnold N.
NTC Business Books, 1993
Buku Teks
Universitas Indonesia, 2001
UI - Skripsi (Membership)
Lukman Hakim
Buku Kita, 2008
Buku Teks
Reno Amrih Rahajeng
Universitas Indonesia, 2005
UI - Tesis (Membership)
Universitas Indonesia, 1999
UI - Skripsi (Membership)