Paulus Winarno
Reach your maximum potential: overcome the limitations and be the best you can be
Gramedia, 2005
 Buku Teks
Zabel, William D.
The rich die richer and you can too / William D. Zabel
William Morrow and Company, Inc., 1995
 Buku Teks
Johnson, Winslow
Powerhouse marketing plans: 14 outstanding real-life plans and what you can learn from them to supercharge your own campaigns
[American Management Association, ], 2004
 eBooks
Sternberg, Robert J.
Career Paths in Psychology: Where your degree can take you
APA, 2000
 Buku Teks
Maan, Everett J.
You can make money on the stock market : your personal investment guide
Macmillan, 1956
 Buku Teks