Strecker, Edward A.
Discovering ourselves: a view of the human mind and how it works
Macmillan, 1966
Buku Teks
Wonnacott, Ronald J.
Statistics : discovering its power
John Wiley & Sons, 1982
Buku Teks
Slipman, Sue
Helping ourselves to power : a handbook for women on the skills of public life / Sue Slipman
Pergamon Press, 1986
Buku Teks
Fritz, Roger
The power of a positive attitude: discovering the key to success
American Management Association, 2008
eBooks
Nadya Putri
The shadow effect: illuminating the hidden power of your true self
Harper One, 2010
Buku Teks