Hill, Napoleon, author
Berpikir dan menjadi kaya=Think and grow rich : for the Twenty-first century / Napoleon Hill; alih bahasa, Arif subiyanto
Ramala Books, 2007
 Buku Teks
Kaplan, Burton, author
Winning people over : 14 days to power and confidence
Prentice-Hall, 1996
 Buku Teks
Waitley, Denis, author
Psychology of success : developing your self-esteem / Denis Waitley
Glencoe ; MCGraw-Hill, 1997
 Buku Teks
Mortensen, Kurt W., author
Maximum influence: the 12 universal laws of power persuasion
American Management Association, 2013
 eBooks
Covey, Stephen R., author
Living the 7 habits = Menerapakan 7 kebiasaan dalam kehidupan sehari-hari
Binarupa Akasara, 2002
 Buku Teks
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