Wheelwright, Steven C., author
John Wiley & Sons, 1980
Buku Teks
Makridakis, Spyros G., author
Binarupa Aksara, 1994
Buku Teks
Michel-Kerjan, Erwann, author
Public Affairs, 2010
Buku Teks
Naisbitt, John, author
Brealey, 1994
Buku Teks
Dickson Jingga, author
2014
UI - Skripsi (Membership)