Coyle, Brian
Financial World, 2000
Buku Teks
Vicky Erwin
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2013
UI - Tesis Membership
Millman, Gregory J.
The Free Press , 1995
Buku Teks
Thierry Aditya Satiadhi
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2018
UI - Skripsi Membership
editor, Robert J. Schwartz
New York Institute of Research, 1990
Buku Referensi